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Cacti and other succulents

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1 cacti and other succulents

2 Cacti and other succulents Monthly organ of the societies named as publisher Issue 8 August 2000 Volume 51 ISSN CONTENTS Any use, in particular copying, editing, translation, microfilming, feeding and processing in electronic systems - unless expressly permitted by copyright law - requires the Editor's approval. Printed in Germany. In the habitat M. SOTOMAYOR, A. GOMEZ, M. MARTINEZ Pelecyphora strobiliformis: First find in the state of San Luis Potosi Page 197 Introduced W. RAUH & M. TEISSIER Aloe zombitsiensis Rauh & Teissier spec. nov. (Aloaceae) Page 201 In the EBERHARD LUTZ Habitat Giant Carnegieas in the Sonoran Desert Page 204 From the KuaS editorial team Even if the annual general meeting of the German Cactus Society is now almost six weeks old - one thing remains fondly remembered: the broad one Approval and the praise that there was in Trier for the current KuaS. I'm happy about that, says the entire editorial team. Obviously we are on the right track. The current face of the magazine is only feasible because everyone pulls together: The authors who present many facets of our hobby in scientific or popular science. The editors who bring the stories into shape and create a multi-layered KuaS every month. And which has meanwhile developed into a wonderfully well-coordinated team. Whereby we are on two important points: The range of articles is not bad, but I ask old and new authors to sit down at the typewriter - if necessary after consulting me. After all, we want to keep the colorful diversity of the KuaS. Echinocereen are wonderful - but reading about them twice in each issue is also boring (maybe I should have better mentioned Cyphostemma or Neobuxbaumia, because mind you, this was just one example; Echinocereen articles are of course very welcome). The second: Werner Gietl, our extremely accomplished DKG country editor, wants to resign after more than 5 years of commitment at the latest by the end of the year. I very much regret this! Working with him was and is great. Despite this drop of bitterness, I wish you lots of fun with this booklet. Your Gerhard Lauchs In Kultur, HUBERT MÜLLER observes flower variability on Ferocactus rectispinus Page 206 Introduced BERNHARD BOHLE Chorisia speciosa - the wool tree from Brazil Page 208 Selected for you DIETER HERBEL Recommended cacti and other succulents Page 210 In the DETLEV habitat SCHNABEL & BIRGIT SCHMITZ The succulent paradise Richtersveld Page 211 Introducing KARL ECKERT Robert Gräser's Trichocereus hybrid, coffee Page 218 In culture, DIETER SCHIRMER observes flower formation on Geohintonia mexicana Page 220 From the world of succulents ODA KREMER-VIERECK In search of the cactus collector 222 magazine articles pages 200 and 219 letters to the editor page 221 event calendar page (184) classified ads page (170) Preview of issue 9/2000 and imprint page 224 Cover picture: Cynanchum mamieranum Photo: Wolfgang Niestradt

3 IM HABITAT Eight sub-populations Pelecyphora strobiliformis State of San Luis Potosi: First find in by J. Manuel Sotomayor M. del C, Alberto Arredondo Gömez & Mario Martinez Méndez Abstract: The first known site in the state of San Luis Potosí, Mexico, for Pelecyphora strobiliformis is reported from the Municipio of Vanegas. The total distribution of the taxon is mentioned. The characteristics of the topography, geology, climate and soil composition are described as well as the population s distribution and associated vegetation. The species is classified as Lower Risk / least concern (LR / lc) for that locality. Summary: Se informa sobre la primera localidad conocida de Pelecyphora strobiliformis en el estado de San Luis Potosí, México, la cual se encuentra en el Municipio de Vanegas. Se menciona la distribution total of the taxon. Se describen las caracterfsticas topogrâficas, geolögicas, climâticas y de composition del suelo, asi como la distribution de la poblacion y la vegetation asociada. Se analizan los impactos y se clasifica la situation de conservation de la especie en esa localidad, la cual es Bajo Riesgo / riesgo minirno (LR / lc). Introduction Pelecyphora strobiliformis was previously regarded as a species whose range was limited to a zone in the border area of ​​the Mexican states of Nuevo Leon and Tamaulipas. One after the other, the following sites have been given in the literature to date: Jaumave Valley, Tamaulipas (Viereck, cf.B ravo & S änchez M ejorada 1991), at Miquihuana, Tamaulipas (Anderson & B oke 1969, site of the neotype), Dr . Arroyo, Nuevo Leon (Lau, Hinton, cf. G lass 1998), in the south of Nuevo Leon (G lass 1998), Sandfa, Nuevo Leon (J. Hinton, see A nderson & al. 1994). During the field studies of our working group (Grupo San Luis) in February 1998 we came across a very extensive population of this species in the north-northwest of the state of San Luis Potosí in the municipality of Vanegas (Fig. 2), which will be described in more detail below. The H abitat The species grows here on a slope with 3 steps of a mountain range, at altitudes between 1840 and 1860 m, in free, on the surface limestone-sandy soil, classified as Xerosol Câlcico (INEGI 1989) with a gravelly-stony phase a gradient of 0 to 5% at the top and 20% at the base. The mountains correspond to a conglomerate formation of the Quaternary period (INEGI 1983). The area has a semi-hot dry climate (BSOhx according to the classification by W. Koppen, modified by E. García, INEGI 1990), with average annual rainfall of 200 to 300 mm (INEGI 1983). The vegetation of this zone corresponds to the, matorral desértico rosetöfilo (Rz edowski 1957) (Fig. 1) with Agave lecheguilla, A. striata and Hechtia glomerata, other existing plant species are Yucca carnerosana, Larrea tridentata, Dasylirion spec., Flourensia cernua (hojasén) , fatropha dioica. Accompanying cactus species: Echinocereus cinerascens, E. pectinatus, Ferocactus hamatacanthus, F pilosus, Echinocactus platyacanthus, Mammillaria chionocephala, M. formosa, M. pottsii, Opuntia cantabrigiensis, O. imbricata, O. stenopetala,. Cacti and other succulents 51 (8)

4 Fig. 1: The new place where Pelecyphora strobiliformis was found on the slope of a mountain range around 1,840 meters above sea level. All photos: Sotomayor Fig. 2: The newly discovered site of Pelecyphora strobiliformis is in the municipality of Vanegas. The population The population Pelecyphora strobiliformis consists of 8 subpopulations, distributed on an almost straight line in a north-south direction. 7 of them are in zenith exposure (summit area) and one at a mountain foot in north exposure. The distance between the first and the last subpopulation is a little less than 2 km. The average distance between the subpopulations is 180 m. The size of the subpopulations is variable, it ranges from 30 to 840 m2, the total area is m2. The occupied area has a size of m2 (calculated according to the IUCN 1994 criteria). The average plant density is 18 to 20 plants / m2, with a maximum of 32 individuals / m2. The diameter of the adult plants varies between 3.5 and 4.5 cm, with a maximum of 5 cm (Fig. 3). An adult specimen has been deposited in the Herbario Isidro Palacios of the Instituto de Investigaciones de Zonas Desérticas of the Universidad Autönoma de San Luis Potosf (SLPM 26785). The flowering period is from May to June (Fig. 4). Endangerment The site cannot be used for agriculture, is far from human settlements and is not known to the inhabitants of the area, as there is no possibility of use. 198 Cacti and other succulents 51 (8) 2000

5 is present. There is no evidence of intra- or infraspecific competition or damage from diseases and / or insect damage. The wider area is affected by overgrazing (goats and horses) and fiber extraction from Agave lechuguilla, but these activities appear to have little impact on the Pelecyphora population. There are no traces of fire and the likelihood of such damage is also low in the future due to the vegetation structure of the site. The most important problem is the possible discovery of this site by illegal collectors, who are the worst enemies of this species and have already caused serious decimations of the known populations (Anderson & al. 1994, Glass 1998). According to the Norma Oficial Mexicana Norm-059-Ecol-1994, the population status is classified as endemic, in danger of extinction. The species is in the CITES Appendix I. A nderson & al. (1994) classify them as vulnerable (VU), G lass (1998) classify them as threatened. According to the criteria of the IUCN (1994), the degree of endangerment at the described location is to be classified as low endangerment / existence not yet causing concern (LR / lc). Conclusion In accordance with the data known to date, this is the first report of its kind in the state of San Luis Potosi, Mexico. Possibly the range of this species is even larger than known to date. All sites known to date are isolated from one another. Acknowledgment The Sistema de Investigacion Miguel Hidalgo (SIHGO) and the Consejo Nacional de Ciencia y Tecnologia (CoNaCyT) as well as the Fundaciön PRODUCE San Luis Potosí are thanked for the financial support of the Proyecto RN-8/97, Milan Zachar for his valuable information. We thank Betty and W. A. ​​Fitz Maurice for their moral support and encouragement, and Betty F. M. for their kindness in translating the summary into English. Special thanks to our friend Dr. Reto F. Dicht for the German translation of this article. Literature: ANDERSON, E.E, ARIAS MONTES, S. & TAYLOR, N.P. (1994): Threatened cacti of México. - succ. Plant Res. 2: ANDERSON, E.F. & BOKE, N.H. (1969): The genus Pelecyphora (Cactaceae): Resolution of a controversy. - Amer. J. Bot. 56: BRAVO-HOLLIS, H. & SÄNCHEZ-MEJORADA R., H. (1991): Las Cactáceas de Mexico, Vol Universidad Nacional Autönoma de México, México DF GLASS, C. (1998): Guia para la identificaciön de las Cactâceas amenazadas de México. - Edit. Fideicomiso Fondo para la Biodiversidad, México. HERNÄNDEZ, B. T. (1998): Nota Referente al Estado de Conservaciön de Pelecyphora strobiliformis (Werdermann) Fric et Schelle. - Cact. Suc. Mex. 43: HUNT, D. (1999): CITES Cactaceae checklist. 2nd ed .-- Royal Botanic Gardens, Kew. INEGI (Institute Nacional de Estadistica, Geografia e Informatica) (1983): Carta Estatal de Climas esc: 1: Fig. 3: Pelecyphora strobiliformis in situ ", location in the municipality of Vanegas. Cacti and other succulents 51 (8)

6 INEGI (Institute Nacional de Estadistica, Geografia e Informatica) (1989): Guias para la Interpretaciön de la Cartograffa. Edafologia. - México. INEGI (Institute Nacional de Estadistica, Geografia e Informatica) (1990): Gufas para la Interpretaciön de la cartografia. Climatología. - México. IUCN (1994): Red List Categories. - IUCN Species Survival Commission, Gland. NORMA OFICIAL MEXICANA (1994): Diario Oficial de la Federacion. Norm-059-Ecol-94. RZEDOWSKI, J. (1957): Vegetaciön de las zonas Aridas de los Estados de San Luis Potosi y Zacatecas. - Rev. Soc. Mex. Hist. Nat. 18: Fig. 4: The bright flowers of Pelecyphora strobiliformis appear in the months of May and June. Dr. J. Manuel Sotomayor M. del C. Biol. Alberto Arredondo Gômez Mario Martinez Méndez Arista 885, Barrio Tequisquiapan. C.P San Luis Potosi, S.L.P., Mexico. JOURNAL ARTICLES Williamson, G. 1998: A new Tylecodon species (Crassulocaeae). - Cact. Suce. J. (US) 70:, ills. The Tylecodon bleckiae, which was discovered in 1985 and is newly described here, comes from Namibia. it is distinguished from T. schaeferianus by its more elliptical leaves. Williamson, G. 1998: A new Tylecodon (Crassulocaeae) from northern Namaqualand, Northern Cape Province of South Africa. - Cact. Suce. J. (US) 70:, ills. The yellow-flowered Tylecodon cordiformis, newly described here, of which only a single population is known, differs from the closely related T. bayeri in that it has a larger root beet, thicker and shorter branches and flower stalks up to 8 mm long. Pinkava, D. J. 1998: Uniqueness of the endangered Florida Semaphore Cactus. - Sida 18 (2):, map. Morphological studies show that the Florida Semaphore Cactus "is a separate species, which must correctly be called Opuntia corallicola. It was often incorrectly called O. spinosissima. An identification key and a comparison table list the differences to the related species of the subgenus Consolea Due to the small population size and genetic diversity as well as damage from the cactus moth and, more recently, from Hurricane Georges, the species is regarded as one of the most endangered plants in the US Augustin, K., Beck, S., Gertel, W. & Hentzschel, G 1999: Due nuove variété di Sulcorebutia tiraquensis (Cardenas) Ritter [Two new varieties of Sulcorebutia tiraquensis (Cardenas) Ritter] - Cactus & Co. 3 (2):, ills. The authors describe two new varieties of the in the Bolivian province Cochabamba occurring Sulcorebutia tiraquensis. Both varieties are only from two isolated populations in the south and in the west of the H. main distribution area of ​​the species known. 5. tiraquensis var. Aguilarii Augustin & Gertel differs from the type variety by individual, rarely sprouting bodies, thin and flexible thorns and the light purple flower. S. tiraquensis var. Renatae Hentzschel & Beck is characterized by smaller bodies, flexible and soft thorns, the purple flowers and smaller seeds. Rowley, G.D. 1999: The stick Ceropegia: C. dichotoma. [La Ceropegia a candela: C. dichotoma). - Cactus & Co. 3 (2):, ills. The clans from the relationship of the Canarian Ceropegia dichotoma, which were previously assigned to several species, are now classified as subspecies of this species by Rowley. C. dichotoma ssp. fusca has brownish flowers, the two yellow-flowered subspecies differ in the number of flowers per ball, 1-8 in C. dichotoma ssp. dichotoma and in C. dichotoma ssp. krainzii. Rauh, W. & Bardot-Vaucoulon, M. 1999: Nouvelles Euphorbes du Massif de l'ankarana, au nord-ouest de Madagascar (2). - Succulentes 22 (4): 3-10 ,, ills. Euphorbia labatii is a geophytic Euphorbia species from north-eastern Madagsakar, which is newly described here (with 2 photos). The differences to Euphorbia cremersii are indicated; Euphorbia ankaranae is also presented in text and images. (D. Metzing) 200 cacti and other succulents 51 (8) 2000

7 PRESENTED New Aloe Species from Madagascar Aloe zombitsiensis Rauh & Teissier spec. nov. (Aloaceae) by Werner Rauh t & Marc Teissier Summary: An Aloe species (sect Lomatophyllum) from SW Madagascar, Aloe zombitsiensis (Aloaceae), is described here new to science. It is distinguished from Aloe prostrata by shorter, white-spotted leaves and smaller flowers and fruits. Fig. 1: Aloe zombitsiensis - the plant forms stemless rosettes. All photos: Rauh The following new species to be described belongs to the genus Lomatophyllum founded by C. J. Willdenow in 1811. In contrast to the capsule-fruited aloes, these have fleshy, juicy berry fruits; they are also self-fertile, i.e. they plant fruits without cross-pollination. Since they are difficult to distinguish from aloe vegetatively and also with regard to their flower shape, L. E. Newton and G. R. Rowley (R o w ley 1996) included Lomatophyllum as an independent genus and placed it as a section on aloe. The genus Aloe is therefore divided into the section Aloe (capsule fruits) and section Lomatophyllum (berry fruits). All previously known Lomatophyllum species have been transferred from Newton & R ow ley to Aloe, including the new Lomatophyllum species described by the author in 1998 (Rauh 1998: 114; Newton & Rowley 1998). Aloe zombitsiensis Rauh & Teissier spec., Nov. Aloe zombitsiensis is a decorative rosette plant related to Aloe (sect.Lomatophyllum) prostrata H. Perrier, which grows in the still existing forest area of ​​Zombitsy (i) east of Sakaraha (Prov.Toliary) and both of Marc Teissier (Jardin Botanique Les Cèdres , St. Jean Cap Fig. 2: A blooming specimen of Aloe zombitsiensis in culture. Cacti and other succulents 51 (8)

8 Fig. 3: The enlarged inflorescence of A. zombitsiensis (left). Even during flowering, the round fruits sometimes develop (Fig. 4) (right). Fig. 5: An older fruiting specimen of Aloe zombitsiensis. Ferrât, France) as well as by Rauh (Heidelberg Botanical Garden) and has already flowered and fruited several times in the culture. Description: Plant forming stemless single rosettes (Fig. 1), flowering up to 15 cm high, leaves up to 25, forming a flat rosette with a diameter of up to 30 cm, densely standing so that the leaf sheaths are not visible.Spreading narrowly lanceolate, up to 18 cm long, above the sheath up to 2.5 cm wide, gradually narrowing towards the tip, weakly canaliculate, the upper half curved downwards, dark green with irregularly arranged white spots or lines, on the edge with small, deltoid teeth 2-3 mm high; these at a distance of 3-15 mm, on average 5 mm (Fig. 1 & 2). Succulent leaf tissue sap yellow. Inflorescence single-cluster, up to 15 cm long (Fig. 2) with a 5 mm thick, up to 10 cm long shaft slightly flattened at the base; this has more or less 4, narrow, triangular, long-pointed, paper-like bracts in the upper third. Rhachis of the inflorescence short, approx. 5 cm long, 3 mm thick, reddish. Floral bracts similar to stem bracts, but smaller, as long or longer than the 5-7 mm long pedicellus. Flower buds directed obliquely upwards, prefloral flowers protruding horizontally, curved downwards at the time of anthesis (Fig. 3), curved upwards postflorally. During the flowering sequence, young fruits develop on the base of the inflorescence, covered by the dried perigone (Fig. 4). Perigone tube 2.5-2.7 cm long, approx. 2.7 mm thick, somewhat angular, slightly enlarged at the base. Outer tepals bright vermilion with green, white-edged tips, about 4 mm high united. Stamens and styles for cacti and other succulents 51 (8) 2000

9 including the time of anthesis; the latter protruding 5 mm postflorally (Fig. 3). Ovary oblong, spherical, furrowed, 4.5 mm high, orange-yellow. Fruits dark green, rounded, deeply furrowed berries 1-1.5 cm in length and diameter (Fig. 5). Holotype: B. G. H in the Herbarium of the Inst. Syst. Bot. Univ. Heidelberg (HEID). Distribution: Forest of Zombitsy (i), at a height of approx. M, terrestrial in humus forest soils, north of Sakaraha (Prov. Toliary). For comparison, Aloe prostrata (H. Perrier) L. E. Newton & G. D. Rowley (.Lomatophyllum prostratum) is included. The new Aloe zombitsiensis differs from Aloe prostata in that it has shorter, lanceolate-like leaves that do not have the noticeable serrations of Aloe prostrata on the leaf margins. In addition, the leaves of A. zombitsiensis are spotted white. The flowers and fruits are smaller than those of A. prostrata. Fig. 6 shows a flowering plant with the typically chocolate-colored leaves, the rough-toothed edge of which is shown in Fig. 7. Latin diagnosis: Affinis est A. prostrato (H. Perrier) Rowley & Newton (= Lomatophyllum prostratum H. Perrier) et differt ab ea foliis oblonge - lanceolatis, albo - maculatis, ordine denticulorum marginis foliorum, velut floribus minoribus et fructibus. Type A. prostrati habet ex Perrier folia fusca usque chocolataeformia cum ordine denticulorum crassissimo marginis foliorum. Dentes late - trianguli, subfusci et duri sunt. Margo folii ea re valid undulatus apparet. Holotype: B.G.H, in herb. inst. syst. bot. univ. Heidelberg (HEID). Distributio: Silva Zombitsy (i), in altitudine ca m terrestricus in locis umbrosis humi, septentrionalis Sakaraha (Prov. Toliary). In terms of its leaf shape and toothing, Aloe zombitsiensis is also close to A. propagulifera Rauh & Razafindratsira (= Lomatophyllum propaguliferum) (see Rauh 1998: 94, Fig. 9, 11, 12), but this differs in the less flowered inflorescences and the formation of brood sprouts in the inflorescence area. The culture of this plant does not cause any difficulties. It only requires a relatively high level of humidity, as the leaves curl up during the dry season. Since the plant sets abundant seeds, it is easy to propagate. Literature: NEWTON, L E. & ROWLEY, G. D. (1998): New transfers from Lomatophyllum to Aloe (Aloaceae). - Bradleya 16: 114. RAUH, W. (1998): Three species of Lomatophyllum and one newa / oe from Madagascar. - Bradleya 16: ROWLEY, G.D. (1996): The berried Aloes: Aloe sect. Lomatophyllum. - Excelsa 17: Prof. Dr. Werner Rauh Jahnstr. 4 D Heidelberg Marc Teissier Jardin Botanique Les Cedres St Jean Cap Ferrât, France Fig. 6: Aloe prostrata (sect. Lomatophyllum), flowering plant. Fig. 7: Leaf teeth of the A. prostrata plant shown in Fig. 6. Cacti and other succulents 51 (8)

10 IN THE HABITAT Giant Carnegieas in the Sonoran Desert by Eberhard Lutz Desert landscape in the Sonora with saguaros near Gila Bend / Arizona. All photos: Lutz Saguaro, pronounced Sa-hu- a-ro, that's the popular name for the large Carnegiea gigantea that grow in the south of Arizona and sometimes form real cactus forests here. South of Tucson is the Saguaro National Monument - unfortunately, many of the large candelabra cacti have shown increasing damage in recent years, caused by air pollution. The largest saguaro known to date with a height of 16 meters was reported from Safford Peak northwest of Tucson - unfortunately it fell victim to a severe thunderstorm in 1975. Engelmann gives an impressive illustration of these mighty cactus giants in the opening image of his Cactaceae of the Boundary (in Emory 1859). Since cacti do not develop annual rings like trees, the age of a saguaro can only be roughly estimated. Depending on the local rainfall and the respective location, a Carnegiea needs about 70 years to reach flowering maturity with a height of about 2 meters. After about 100 years, now 5 to 6 meters high, the plant begins to push its first side shoots and is only after 204 cacti and other succulents 51 (8) 2000

11 another 100 years at a height of 12 m fully grown. With a little luck, she will have another 100 years to live. In February my wife and I were on a botanical excursion in the Sonora Desert - I heard in Gila Bend about a giant saguaro that was said to have over 50 branches. Since the stories are usually exaggerated, the story struck me as quite implausible - on the other hand, it wouldn't be entirely impossible. After all, Benson (1982) shows an older photograph of a Carnegiea gigantea with 49 side shoots. But I myself had never seen a plant with more than 20 side shoots. In any case, our interest was aroused and with some approximate information on the location of the super saguaro we went on the search. On the west side of the Painted Rock Mountains we first drove south on an adventurously bad dust stretch. The path soon turned into a washed-out lane that was only passable with all-wheel drive and at walking pace. After just under an hour we had reached our destination - a Creosot bush plateau with large lava rocks as if by the hand of a giant. Along a dry arroyo, between paloverde and mequite trees, stood many remarkably large Carnegiea gigantea. And then we stood in awe of the greatest saguaro of all time. A Carnegiea, an estimated 12 to 13 m high and a good 3 m wide. We counted a total of 59 side shoots and were deeply impressed by the incredible and unique size of this plant. We had never seen anything like it before. The main trunk was a good 60 cm in diameter at the base and more than 70 cm in the middle at the second branching point. Some of the lower side shoots were up to 50 cm thick. A second Supercereus is growing just a short distance away, and although it is still decidedly more modest, it already has 32 side shoots. A trip to the two cactus giants would certainly be worth a day's vacation and could even be the highlight of a trip. Literature: BENSON, L (1982), The Cacti of the United States and Canada. - Stanford University Press, Stanford. ENGELMANN, G. (1859): Cactaceae. - In: W. H. EMORY, Report on the United States and Mexican boundary survey. Vol. 2, Part 1: Botany of the boundary. - Department of the Interior, Washington. Eberhard Lutz P.O. Box 176 Torrey, UT USA The Millennium Saguaro ": Carnegiea gigantea west of the Painted Rock Mountains / Arizona with 59 side shoots. Cacti and other succulents 51 (8)

12 OBSERVED IN CULTURE Clear differences in color Flower variability on Ferocactus rectispinus by Hubert Müller The family around Ferocactus rectispinus has been known for a long time. The first description has already been made. It goes back to a manuscript by Dr. Engelmann, who as a basis for his work only had 2 areoles with attached thorn bundles, collected by W. M. Gabb, from the year 1867. Even then, the author found it remarkable in his description to refer to the unusually long, straight to slightly curved central spines. The central spine is also emphasized by Co u l t e r as being very long. Blossom and fruit, on the other hand, were unknown to him. In the meantime, many observations have also been published on this. In the following I would like to add one aspect. During a summer vacation in 1998 I had the opportunity to visit a cactus collection on Tenerife. Among other things, several specimens of Ferocactus rectispinus were seen in bloom. It was interesting to note that the flower color varies from plant to plant. The illustrations show the two extremes. These can be characterized as follows: First specimen: flower 6 cm long and 7.5 cm in diameter; Scales on the ovary with a broad, wine-red central stripe and a thin, partly ciliated or slightly wavy yellow border; smooth transition from the scales to the petals, whereby the red central stripe on the outside becomes narrower and narrower until it is completely missing; inner perianth segments pure yellow, shiny, lanceolate, pointed, sometimes lightly serrated (staminodes were not consciously perceived), stamens yellow, in the upper part a slight hint of light brown, anthers light yellow; Style yellow, pale yellow scars; almost odorless (Fig. 1). Second specimen: flower 6 cm long and 7.5 cm in diameter; Scales on the ovary- Fig. I: Radiant yellow flower: A specimen of Ferocactus rectispinus on Tenerife. All photos: Müller 206 cacti and other succulents 51 (8) 2000

13 Fig. 2: This specimen of Ferocactus rectispinus, on the other hand, has a strong red central stripe. Fig. 3: An attractive plant even without flowers: a younger Ferocactus rectispinus. around with a broad, wine-red central stripe and a thin, partly lashed or slightly wavy yellow border; smooth transition from the scales to the petals, whereby the red central stripe on the outside becomes ever narrower without disappearing completely; inner perianth segments yellow with an almost continuous and indistinct red central stripe, shiny, lanceolate, pointed, sometimes slightly serrated (staminodes were not consciously perceived); Stamens yellow at the base, red in the upper half with a short transition area from yellow to red, anthers yellow; Style yellow, scars, these becoming light wine-red at the base and light yellow on the outside; almost odorless (Fig. 2). In between there were different transitions in the flower color. The buds, on the other hand, were almost uniform. With this Lower Californian Ferocactus species you have to wait many years for the pile to grow. But then it increases the attractiveness of the already impressive plants (Fig. 3) even further. Literature: COULTER, J. (1896): Preliminary revision of the North American species of Echinocactus, Cereus, and Opuntia. - Contr. U.S Natl. Herb. 3 (7): UNGER, G. (1992): The large spherical cacti of North America. - Self-published, Graz. Hubert Müller Bremer Straße 4 D Apolda Cacti and other succulents 51 (8)

14 PRE-PRESENTED Chorisia speciosa - the wool tree from Brazil by Bernhard Bohle Over and over full of flowers: Chorisia speciosa with the typical broad crown, photographed in Bahia near Xique-Xique, Brazil. Below is a detail of a flower that is beginning to fruit. Photos: Schindhelm Chorisia specios a A. Saint-Hilaire (Bombacaceae), also known as wool tree, is a fast-growing bottle tree from the wool tree family, with a spreading crown, which within a few years reached a stately height of 15 m and more reached. The trunk has a pronounced bottle shape, is smooth, greenish and covered with many pointed spikes, which, however, may be missing with age. Originally native to southern Brazil and northern Argentina, the non-hardy species has now spread further north. In May 1988 we were able to find an exceptional number of 208 cacti and other succulents 51 (8) 2000 in the states of Minas Gerais and Bahia

Observe 15 blooming chorisias. After the hand-shaped 5 to 7-lobed, stalked leaves have been shed in spring, the innumerable pink to pink-colored flowers from the treetops shine from afar. The flowering period lasts from March to May and the tree blooms from top to bottom. The flowers, up to 15 cm in size, differ from plant to plant. The genus is very heterogeneous and rich in forms. The 5-fold petals are purple to pink at the tips, brownish mottled in the transition zone and yellow-white at the base. But there are also pure red or pink flowers. Chorisia speciosa develops its greatest beauty after the leaves shoot in late summer. Then the avocado-like fruit capsules change color from green to brown and open with five flaps. After the capsule wall falls off, they release the shiny, pure white woolen hair. These are like shimmering little balloons with pea-sized black-brown seeds. In Brazil, this water-repellent wool is used to produce high-quality paper and as a filling for pillows. Note d. Red: Like most of the other members of the Bombacaceae, Chorisia is not normally counted among the succulent plants. Because although older specimens can store cubic meters of water, they lack a special water storage tissue. Nevertheless, a large number of young plants and seedlings are in cultivation in our succulent plants. These include above all plants from the genera Adansonia (A. digitata, the baobab from Africa), Bombax (.B. Ellipticum from Mexico) and Chorisia (especially the species presented here). Almost all of the Bombacaceae grow into giant trees with age. Bernhard Bohle Bürener Weg 15 D Rüthen Plump fruit: The lush green fruit capsules of Chorisia speciosa are similar to avocados. Photo: Schindhelm Pure red flower variations are also quite common (left). Here a plant from Engenheiro Dolabela in the state of Minas Gerais. The trunk of Chorisia speciosa is heavily armed with spines. Photos: Schindhelm / Bohle cacti and other succulents 51 (8)

16 RECOMMENDED CACTS AND OTHER SUCCULENTS - SELECTED FOR YOU by Dieter Herbei Rebutia arenacea C ardenas Also here, often better known under the now invalid generic name Sulcorebutia. Remaining small species from the Bolivian highlands, which Backeberg assigned to the genus Rebutia in his cactus lexicon from 1965. The numerous flowers appear on small plants in early spring. Not very demanding in terms of care, in summer to keep plenty of water and plenty of fresh air outdoors, sometimes without glass protection. In return, very cool and absolutely dry wintering! Propagation is easy by sowing and cutting off side sprouts. Haworthia papillosa (S.-D.) HAW. As the name suggests, the long, pointed, strong leaves are densely covered with round, white warts, which gives the whole plant an extremely decorative appearance. Native to the Cape Province of South Africa, the genus belongs to the lily family. Willingly growing species for slightly partially shaded places, avoid hours of blazing sun in summer. Quite undemanding in the further care of sandy, water-permeable substrates. Repeatedly give plenty of water in summer, overwintering, on the other hand, is quite cool at only about +6 to 10 C, then keep absolutely dry. Propagation is best done by cutting off lateral rungs. Pilosocereus leucocephalus (Poselger) Byles & Rowley Still known to many collectors under the older generic name Pilocereus. An extremely splendid species with a columnar habit that is ideal for planting out in primary beds. Seedling plants rarely bloom, even with a height of two meters. Therefore cut off the meter and root again, from then on they will bloom abundantly every year. Typical night bloomer with a strong scent, which mainly attracts bats to pollinate at home. Warm, full sun with plenty of water in summer, but never over-spray because of the thick, white wool! Winter absolutely cool and dry cacti and other succulents 51 (8) 2000

17 DKG Jute '"Impressions from the annual general meeting of the DKG in Trier Kisses, kisses and an opulent bouquet of flowers - this is how Diedrich Supthut, the outgoing President of the German Cactus Society, congratulated his successor in the presidency. Dr. Barbara Ditsch, previously an assessor on the board, was elected by a large majority as the first woman to head the DKG at the annual general meeting in Trier. There were also flowers for Gretel Rothe, head of the DKG office for more than five years. As reported, Ms. Rothe will resign from this office in the autumn. In Trier, Diedrich Supthut thanked Gretel Rothes for the extraordinary commitment, who had made the office the most important point of contact for the DKG during this time (bottom left). No flowers, but a book present and a certificate for Franz Polz (bottom right). The DKG honorary member has been loyal to the society for 50 years.The 87-year-old couldn't fail to travel from Munich especially for the award. And of course he didn't just go back to the Isar with a certificate of honor and a book: some of his valued Matucanas and other succulent rarities were also in his luggage. Text and photos: Lauchs Deutsche Kakteen- Gesellschaft e. V., established office: Betzenriedweg 44 D Eningen under Achalm Tel / Fax 07121 / cactus-mall.com/dkg/ Cacti and other succulents 51 (8) 2000 (165)

18 Awarded by Karl-Schumann- Prize 2000 Congratulations for Dr. Gerhard Frank: The chairman of the AG Echinocereus received from the new DKG president Dr. Barbara Ditsch the Karl Schumann Prize Photo: Lauchs On September 27, 1987 the time had come: 19 Echinocereen friends from the then Federal Republic met on the occasion of the Osnabrück Cactus and Succulents Exchange and founded the DKG's Echinocereus working group. The then chairman of the DKG, Mr. Siegfried Janssen, wrote the Echinocereen-Freunde in the studbook (first edition of Der Echinnocereenfreund): ... You have made up your mind, through research observations, searches and experiments with and on the plants, but also in literature to collect everything known and unknown and to put it on paper. You yourself know better than I that apparently insignificant statements help to close some gaps ... The discussions will probably be controversial, use the resulting opportunities for the benefit of the plants and their carers ... The initiators good luck with your arduous project and all of you continue to enjoy our beautiful hobby. And indeed, the words of Chairman Janssen were fulfilled! After years of rapid growth, the AG Echinocereus of the DKG is today the largest and, as far as publications are concerned, the most active working group of the DKG with over 250 members, including over 50 foreign members. Among the meritorious 1st speakers and later 1st chairman Lothar Germer, Dr. Richard Römer, Prof. Dr. Helmut Fürsch and today Dr. Gerhard R. W. Frank has blossomed into the DKG's parade horse. With over 85 contributions in the KuaS since 1988, the AG Echinocereus has not only fulfilled the minimum requirement of the DKG for its working groups to provide at least two contributions per year for the common, central organ cacti and other succulents, but also the contribution for other working groups that have not yet felt addressed. The articles submitted and published cover the entire spectrum of KuaS, from the index card to the column observed in culture to the first description of new species or their recombination, travel descriptions to unknown locations and also contributions to the new KuaS calendar. In addition, the Echinocereus working group has achieved a significant and worldwide reputation for its currently six special publications, some of which are even in book format. The quarterly published journal Der Echinocereenfreund is enjoying growing popularity as a result of the journal, which has been provided with colored images since the first issue, which has also been provided with an English abstract for several issues and is constantly being improved in terms of content and outfit. All of these activities prompted the DKG jury to, in contrast to previous years, this time not to award the Karl Schumann Prize to an individual author or a team of authors, but to the community of Echinocereen friends. May the award ceremony bring the honored working group to the glory and serve to encourage and encourage other working groups in our society! The board (166) cacti and other succulents 51 (8) 2000

19 Mr. Wolfgang Fladung resigned from the Board of Directors on June 30, 2000 for personal reasons as Vice President / Managing Director of the DKG. With effect from July 1, 2000, the board of directors has appointed Bernd Schneekloth as acting vice-president / managing director. How to contact the new Vice President / Managing Director: Bernd Schneekloth, Niederstr. 33, Trier, Tel. 0651/67894, Fax 0651 / The Board of Directors Vacation of the head of the office The DKG office is closed from September 4, 2000 to September 30, 2000 inclusive due to the vacation of the head of the office. The members and local groups are asked to register their orders and requests for advertising material, flags, banners, etc. in advance. In urgent cases, please contact a board member. Grethel Rothe 3rd A achen Cactus and Succulents Exchange The OG Aachen cordially invites all cactus and succulents friends to its 3rd exchange. The fair will take place on Saturday and Sunday, September 2nd and 3rd, 2000 from 9:30 a.m. to 5:30 p.m. in the Stadtgärtnerei Aachen, Krefelder-Straße 295. Well-known large cactus nurseries, also from the neighboring countries of the Netherlands and Belgium, as well as cactus lovers from the region will offer their plants. The city nursery can be reached via the following motorways: A 4 to Kreuz Aachen, then direction Antwerp - Heerlen, exit no. 3 Würselen - Aachen. After the exit on the right, after the first traffic light approx. 300 m right again to the city nursery. Via the A 76 from Holland at the Vetschau border crossing, then exit no. 3 Würselen - Aachen. After the exit right to m again right to the city nursery. Via the A 6 from Belgium to the Aachen junction, then in the direction of Antwerpen - Heerlen, exit no. 3 Würselen Aachen. After the exit right, after the 1st traffic light approx. 300 m right again to the city gardening shop. The increasing interest in cacti lets us hope that our 3rd exchange will also be a success for all cactus lovers. The board of the OG Aachen und Umgebung K akteenschau der OG W erdau Again according to the old tradition, namely on 9th and 10th September 2000, at the time of the Fraureuther Dalienschau, the OG Werdau invites you to its 20th cactus exhibition and to the 7th West Saxony meeting. On Saturday from 9:00 a.m. to 6:00 p.m. and on Sunday from 9:00 a.m. to 5:00 p.m., a wide range of well-tended cacti and other succulents can be admired in the Erich-Glowatzky multi-purpose hall in Fraureuth. In addition to rare and well-known cacti, succulents and tillandsias from our own cultivation, we also sell old collection plants, all in the usual good quality. Lots of information, a raffle and a pleasant atmosphere for talks: It's worth marking September 9th and 10th in red on your calendar. We are looking forward to your visit. The board of directors of the OG Werdau and the surrounding area 23. O snabrück cactus and succulents exchange 23./24. September 2000 Städt. Vocational School Center Natruper Str. 50 Entrance Stüvestraßeü! Numerous interested parties from home and abroad are expected to attend the event, which is so popular with lovers as well as the population. Companies and collectors offer plants and accessories on a total exhibition area of ​​over m2. Further program items: Saturday, 2:00 p.m. Slide show: Fascinating cacti from the Andean region Speaker: Prof. Dr. Gerhard Gröner, Stuttgart Saturday, 4 p.m .: Meeting of the board members of the DKG local groups in Northern Germany Cacti and other succulents 51 (8) 2000 (167)

20 Sunday, 11.00 a.m. Slide presentation: Succulents from Arabia Speaker: Mr Alan J. Butler, Horsham, W. Sussex, England Sunday, 2.00 p.m. Slide presentation: In the footsteps of knight - A trip to Bolivia Speaker: Mr Herbert Thiele, Paderborn Admission for adults 2.00 DM, children up to 14 years free. The following companies are represented with their offers on our exchange: HH Berghaus, Hörstel-Riesenbeck; Cono's Paradise, Nettehoefe; E. Bludau, Cologne; U. Dosedal, Rhauderfehn; M. Karbowski, Aachen; Cactus Cat, Wachtendonk; F. Noltee, NL AK Zwijndrecht; G. Kliem, Fröndenberg; P. Momberger, Niedernhausen; S. Schaurig, Hochwaldhausen; Spezial-Plants, NL AJ Drachten; Uhlig - cacti, cores 1st row; Cactus Center Oberhausen; Brookside Nursery, England; R. Martin, Bielefeld; B. Dworak, Menslage; Klejsbro, Juelsminde DK; J. F. A. Wortelboer, Amsterdam NL and R. Mattem, Hasloch. And this is how you can find the event: From the north: Motorway A1, exit Osnabrück-Nord. From the south: Motorway A1, exit Osnabrück-Hafen. From the west and east: Motorway A 30, exit OS-Hellern. The access routes are signposted. Please orient yourself in the direction of the center and follow the signs to Kakteen at Heger-Tor-Wall, which you will automatically approach. Further information can be obtained from: Frank Winkler, Auf der Heide 5, Osnabrück, Tel. 0541 / The board of the OG Osnabrück Review of the 3rd Central German Cactus Day After two events in Leipzig and Burgstädt, the Berlin local group had put on their hat for the year 2000 . (For those who don't know yet: Since May 2nd, 2000 there is only one local group in Berlin!) In the Wedding Town Hall, the new Berlin local group under the direction of Dr. Gottfried Gutte organized a nice event. In addition to a proper dealership offer, the interest was, of course, primarily in the three lectures and the discussions on the sidelines. It is difficult to estimate the total number of participants, but there were probably around 120 visitors in the hall at the second lecture of the day. The first lecture was given by Achim Treuheit. With slides of his layout, he mainly gave tips about the layout and maintenance of such a succulent garden. After the lunch break, Ewald Kleiner tried very successfully to counter the need for a nap. With very nice photos and an equally good lecture, which in some places overlapped with that of the previous speaker, it was also about hardy plants and rock gardens. The last lecture by Mr. Schindhelm was about the cactus flora of Peru. Unfortunately, no local group has yet been found that would like to continue this young tradition in the next year. Konrad Müller OG Astrophytum Leipzig OG Hegau at the Landesgartenschau Singen 2000 Shortly before its fortieth anniversary of the local group, the OG Hegau presented itself at the Landesgartenschau Singen 2000, just a few meters from their club, Hotel Widerhold, with an open-air succulent garden. Since April 19, the opening day of the Singen State Garden Show, this contribution has been one of the most beautiful green pearls - precious stones, as these garden architecture contributions are called directly behind the flower hall. The first chairman, Ewald Kleiner, signed the idea and planning. Together with the local group members Bernhard Alf, Albert Bauer, who were immediately enthusiastic about the idea. Winfried Buntrock, Hermann Ganter, Dieter Glocker, Dr. Haas, Hugo Haller and Gert Nindl invested over 150 hours to make the 50 m2 facility an insider tip for visitors. The eye-catcher is a dried up stream bed. Large boulders and moraine debris are used for decoration. Materials that had to be laboriously procured and installed. With the help of a homeopathic plant (168) cacti and other succulents 51 (8) 2000

21 tonic, the approximately 700 outdoor succulents planned for planting in over 50 species, varieties and hybrids from the genera Delosperma, Lewisia, Orostachys, Opuntia, Rosularia, Sedum, Sempervivum, Yucca etc. developed into a beauty that all viewers enthusiastic An illustrated information board and name tags accompany the topic even for visitors who are less versed in botanicals. For everyone who wants to wander through the successful 20 hectare park of the State Garden Show Singen 2000 until October 8th: The open-air succulent garden of the OG Hegau has the number 57 on the map. OG Hegau Ewald Kleiner (front right) on a tour of the much-noticed facility. EXECUTIVE BOARD President: Dr. Barbara Ditsch, Botanical Garden of the TU Dresden, Stübelallee 2, Dresden, Tel. + Fax 0351 / Vice President / Managing Director, acting: Bernd Schneekloth, Niederstraße 33, Trier, Tel / 678 ​​94, Fax 0651 / Vice President / Secretary: Andreas Hofacker, Neuweiler Str. 8/1, Böblingen Tel. + Fax 07031 / Treasurer acting: Jürgen Rothe, Betzenriedweg 44, Eningen unter Achalm, Tel / 83248 Assessor: Diedrich Supthut, Postfach 758, CH-8038 Zurich, Tel. + Fax 0041 / Assessor: Detlev Metzing, Holtumer Dorfstraße 42, Kirchlinteln, Tel. + Fax 04230/1571 Postal address of the DKG: DKG office Ms. Gretel Rothe, Betzenriedweg Eningen under Achalm, Tel /, Fax 07121 / EDITORIAL: see imprint FACILITIES Archive: Hermann Stützei, Hauptstraße 76 , Zell / Würzburg, Tel. + Fax 0931 / Archive for initial descriptions: Hans-Werner Lorenz, Adlerstrasse 6, Hausen, Tel. + Fax 09191/32275 Species protection officer: Dr. Barbara Ditsch, Botanical Garden of the TU Dresden, Stübelallee 2, Dresden, Tel. + Fax 0351 / Library: Norbert Kleinmichel, Am Schloßpark 4, Wörth, Tel / 8637, Account No. Sparkasse Landshut, BLZ Diathek: Erich Haugg, Lunghamerstraße 1, Mühldorf, Tel / 7880 Account No. Postbank Nürnberg (BLZ) Plant identification: Bernd Schneekloth, Niederstraße 33, Trier-Ehrang, Tel / 678 ​​94, Fax 0651 / Seed distribution: Hans Schwirz, Am Hochbehälter 7, Hüttenberg, Tel / 75507 WORKING GROUPS AG Astrophytum: Internet: http // astrophytum.de Günther Stubenrauch, Hans-Jahn-Str. 17, Lahm / Itzgrund, Tel / AG Echinocereus: Internet: Dr. Gerhard R. W. Frank, Heidelberger Str. 11, D Hirschberg, Tel / 55441, AG Echinopsis Hybrids: Internet: Hartmut Kellner, Meister-Knick-Weg 21, Dessau, Tel. 0340 / AG European Country Conference (ELK): Dr. med. Paul Rosenberger, Katzbergstraße 8, Langenfeld, Tel / AG Fachgesellschaft Other Succulents e. V: Internet: Gerhard Wagner, Lindenhof 9,12555 Berlin, Tel. 030 /, Fax 030 / AG Friends of Echinopseen: Dr. Gerd Köllner, Am Breitenberg 5, Ruhla, Tel / 87100 AG EPIG Interest Group Epiphytic Cacti: Prof. Dr. med. Jochen Bockemühl, Postfach, Hamburg, Tel. 040 /, Fax 040 / or 274 cacti and other succulents 51 (8) 2000 (169)

22 AG Gymnocalycium: Wolfgang Borgmann, Goffartstr. 40, Aachen Tel. 0241 / AG Opuntioideen (South America): Manfred Arnold, Im Seeblick 5, Lahr, Tel / AG Parodien: Inter Parodia chain, Friedel Käsinger, Dörnhagenerstraße 3, Fuldabrück AG Philately: Horst Berk, Marientalstraße 70/72, Münster , Tel. 0251 / DKG accounts: Please only use the following accounts for all transfers: Account no .: at Kreissparkasse Reutlingen (bank code) Account no .: at Postbank Nürnberg (bank code) DONATIONS Donations to promote the dissemination of knowledge About the cacti and other succulents and to promote their care in terms of popular education and science, for which a deductible donation notice is to be made out, must only be credited to the separate donation account of the DKG: Account No .: at the Kreissparkasse Reutlingen (BLZ). It is important to clearly state (name + address) the donor and the purpose of the donation (promotion of plant breeding, species protection, conservation collections, projects in the home countries of the cacti, Karl Schumann Prize). The donation notification is usually sent to the donor within three months. Annual fees: Membership: DM 60, - Youth members: DM 30, - Invoice cost share: DM 5, - Airmail surcharge: ask the office Admission fee: DM 10, - Editorial deadline for issue 10 / August 2000 SMALL ADS Please send your classified ads - taking into account the information in Issue 6 / to the regional editorial office of the DKG: Werner Gietl, Kreuzsteinweg 80, D Fürth Tel. 0911 / Fax 0911 / The three publishing companies DKG, GÖK and SKG, point out that artificially reproduced specimens of all species that comply with the Washington Convention on the Protection of Species (WA) can be passed on within the European Community without CITES documents. When dealing with non-EU countries, however, CITES documents are required for all plants of WA species and for seeds of species listed in Appendix A of the EU Species Protection Ordinance. Please ask the responsible species protection authorities which documents these are in individual cases. Search literature about astrophytes, especially Sadowsky / Fleischer and Sadowsky / Schütz as well as Rowley, Kosmos-Enzyklopädie der Sukkulenten und Kakteen, Franckh 1979; other literature about cacti, offer everything! Rolf Münzner, An der Waldkolonie 15 a, D Saarmund. Kuas vintages can be given away as gifts to people who collect them themselves or against postage reimbursement. Lutz Lissy, Kaiserin-Augusta-Alleee 88a, D Berlin, Tel. 030 / Selling KuaS volumes (born, from 1992 loose books) in fresh condition and with index cards as well as books by Weskamp, ​​Backeberg, Rauh, Haage and catalogs for a bid . Dr. Rainer Marwedel, Ferdinand-Wallbrecht-Str. 33, D Hannover, Tel. 0511 / (from 8 p.m.). Submit: surplus seedlings of the genera Mammillaria and Coryphantha with location information. Please request a list from: Heinz Otto, West II No. 6, D Sendenhorst. Plants grow, greenhouses never! For reasons of space, Brazilians sell cheaply: Melos with and without Cephalium, Pilosocereen, Arrojadoas, Micranthocereen etc. Inquiries to: Gerhard Heimen, Ringstr. 14, D Leverkusen, Tel from 7 p.m. or various cacti and other succulents from seedlings to flowering plants (gymnocalycias, lobivias, mammillaries, phyllos, etc.) can be delivered cheaply to self-collectors (approx. 40 km east of Cologne). List against DM 1.10 return postage or via. Ute Nieveler, Wilhelm-Idel-Str. 4, D Wiehl, Tel / 690545, KuaS booklets complete, various.Cactus literature (Reppenhagen: Mammillaria etc.) and cacti - own cultivation - Mammillaria, Lobivia, Gymnocalycium, Echinocereen and some others, plus 2 cold frames including heating coils + thermostat, euro bowls to be sold cheaply. H. Gehrer, Rich.-Wagner-Str. 16, D Bretten, Tel / 7407, columnar cacti such as e.g. Pachycereus weberi, Escontria chiotilla, Neobuxbaumia, Gymnocereus, Backebergia militaris, Mitrocereus wanted by: Sebastian Schölzel, Trajanstr. 19, D Cologne, Tel / Fax 0221 / Phyllo-Hybriden from private collection due to lack of space to be given to self-collectors. Over 30 containers (13-18 cm). Different colors, no name given. No list, no shipping! Georg Schwarz, An der Bergleite 5, D Nürnberg-Katzwang, Tel / 77270 (weekdays 9 a.m. to 6 p.m.). Gymnos, Notos and other Brazilians, Messerschmidt greenhouse 4.50 x 3 m, literature (KuaS, Succulenta, etc.). Oldenburg / Bremen area. B. Lueg, Nachtigallenweg 5, D Ganderkesee, Tel / 1220. The largest and most famous cactus exchange in Holland will take place on Sunday, August 27th, 2000 in Zutphen / Holland, Halle De Brug, Thorbeckesingel 2. We would also like to invite all cactus friends from neighboring Germany. Information from Mr. C. Wonnink, Braamkamp 330, 7206 HR Zutphen / Holland. (170) Cacti and other succulents 51 (8) 2000

23 SKG Intern Aarau Sunday, August 20, 10 a.m., collection visit at the OG Basel Baden Saturday, August 12, Höck at H + H Gabi Basel Monday, August 7, 8 p.m., Hock Rest. Seegarten, Münchenstein Bern Sunday, August 27, Roasting at the OG Solothurn Biel-Seeland Tuesday, August 8, holidays Sunday, August 27, barbecue at the OG Solothurn Chur Sunday, August 27, visiting the OG Gonzen. Cozy get-together and visit to some cactus collections Genève Lundi, 28 août 8:15 pm, présentation du genre Astrophytum par Daniel Cabrini Gonzen Thursday, 17 August 8:00 pm, Parkhotel Pizol, Wangs, Schnider Thomas, slide lecture column cacti Cereen Lausanne Août vacances Lucerne Summer program: Hock with long-term vacances Lucerne Members according to spec. Invitation Oberthurgau Wednesday, August 16, restaurant Freihof, Sulgen, Hock Olten Friday, August 11, barbecue with the Schuhmacher family, Kappel Schaffhausen Wednesday, August 9, competition plant 1998 Gymnocalicium bayrianum. Barbecue fun in Schleitheim by invitation from Solothurn Sunday, August 27th, joint roasting in the Girl Scout House with the OG's Bern, Biel-Seeland, Thun St. Gallen Wednesday, August 23, 8 p.m., Rest. Feldli, St. Gallen, Ferienhöck Thun Sunday, August 27th. August, roasting at the OG Solothurn with the OG's Solothurn, Bern, Biel-Seeland Valais Août vacances, journée des familles Winterthur Thursday, August 31st, Restaurant Neuwiesenhof, Winterthur, Dr. Peter Remensberger: Burma, Land of the Pagodas Zürcher Unterland Friday, August 25th 8pm, Hotel Frohsinn, Opfikon, slide presentation Vietnam, E. Hiltebrand Saturday, August 26th, barbecue with Josy and Wendelin Mächler, Pfungen Zurich - August summer break in Zurzach Saturday , August 12, 6:00 p.m., monthly meeting at Restaurant Kreuz, Full, collection visit at Elfriede and Sigi Steck's in Tiengen OG Biel-Seeland reports: Our cactus exhibition from May 2000 in the Hotel Krone, Aarberg, was a huge success. Thanks to posters, regional radio and two newspaper reports, we were able to advertise beyond the region. 15 members exhibited some of their plants. Association Suisse des Cactophiles, founded by the Swiss Cactus Society Postal address: SKG / ASC, Secretariat, CH-5400 Baden SKG / ASC-Fax: 081 / ourworld.compuserve.com/ homepages / skgasc Photo: Christian Alt Kakteen und other succulents 51 (8 ) 2000 (171)

24 Invitation to the 38th INTERNATIONAL SOIL SEA CONFERENCE Saturday, September 9, 2000 Center zum Bären Kreuzlingen Clock Start of the conference Selling Plants, Literature, Accessories, Soil Cozy Gathering Clock Slide presentation by Adrian Lüthy, Solothurn: Introduction to the Coryphantha genus Clock Slide- Lecture by Helmut Nagl, Traunkirchen / A: Echinofossulocactus at the locations Uhr End of the conference For the first time, our conference will only be held on one day! Any room requests should, however, be addressed to the Kreuzlingen Tourist Office Tel. We look forward to seeing many guests from EUREGIO BODENSEE meet for our traditional conference at the end of the flower year. Order running meters by the end of August to Marco Borio-Grünenfelder Kindergartenstrasse 15 CH 7323 Wangs Tel (172) Cacti and other succulents 51 (8) 2000

25 2000/15 Cactaceae Notocactus pulvinatus v a n V lie t (pulvinatus = Latin cushion-shaped) First description: Notocactus pulvinatus van Vliet, Succulenta 49 (4): Synonym: Parodia langsdorfii subsp. pulvinata (van Vliet) Hofacker & Herrn, Kakt. and. Sukk. 50 (3): Description: Body: spherical up to 15 cm wide and high, forming up to 50 cm wide cushions through sprouting. Central body with fiber root system. Lengthening the body somewhat in old age. Epidermis fresh green to yellow-green, corking at the base. Part of the head hardly sunk and completely covered with white wool. When the shoots come into contact with the ground, advent roots form. Ribs: 14 to 24, sharp-edged, somewhat thickened between the areoles, up to 15 mm deep and cacti and other succulents 51 (8) 2000

26 20 mm wide, flattering at the base, separated by a sharp furrow. Areoles 10 to 18 mm apart, slightly sunken on the rib, clad with thick, white wool, 5 mm wide, even larger in flowering aeoles; balding towards the base. Thorns in the crown like small yellowish needles protruding from the wool. Radial spines 7 to 15, up to 2 cm long, but mostly shorter, golden yellow to light brown pointed, spreading, slightly protruding; the bottom 3 strongest. A few tiny domes at the top, barely sticking out of the wool. 1 central spine, the same color as the radial spines, initially protruding, then pointing downwards at an angle, slightly curved, up to 1.3 to 2.5 cm long. Flowers up to 4 cm long and 4.5 cm wide, made from parting wool, lemon yellow. Petals up to 22 mm long and 3 mm wide in the middle. Petals spatulate, the upper end irregularly serrated. Pericarpel and tube covered entirely with white wool and pointed green scales. Light brown wool and brown bristle hair emerging from the armpits of the scales. Style whitish, up to 16 mm long, the 9 purple scar branches 3 mm long. Nectar chamber 1 mm deep and red. Stamens yellow above, below orange to red. Filaments inserted up to the upper edge of the tube. The anthers are intensely yellow. Usually self-fertile flowering. Fruits pale pink to pale green, up to 13 mm long and 5 mm thick, bare and fleshy at the base, covered in light wool and brown bristles in the upper part. Seeds up to 50 per fruit, helmet-shaped, as high as wide, around 1 mm, the widest point on the edge of the HMB. Test structure made up of small craters that border on 5 or 6 neighboring cells. The Hilum-Micropylar area is somewhat domed, oval and very light. Occurrence: South of the city of Melo, Cerro Largo Department, Northern Uruguay. Grows together with N otocactus erinaceus (Haworth) Krainz, N. ottonis (Lehmann) Backeberg, F railea p yg m a ea Britton & Rose and C ereus alacriportanus Pfeiffer on hollows in stone slabs or next to larger stones in the earth. Culture: As with all notocacti, the winter rest period can be kept short. A minimum temperature of 6 to 8 C is recommended. The growing medium can be predominantly mineral. The plant also thrives in normal cactus soil, such as is offered in stores. N o to ca ctu s p u lvin a tu s is not very common in our collections. Most of the cultivated specimens are the result of propagation of the original plants. The seedlings will take at least 6 or 7 years to flower for the first time. The flowers are not expected until the end of June or the beginning of July. Remarks: When Dirk J. van Vliet found large cushions of this plant at Melo in 1966, this feature seemed so outstanding to him that he described the plant as a new species of the genus No to cactus. Incidentally, it grows together with N otocactus erin a ceu s, another member of the same subgenus M alacocarpus (Salm-Dyck) Buxbaum, without forming transitions. In later years Wigginsia was also found in southern Uruguay and southern Brazil, forming large groups. Notes: Text and image: Norbert Gerloff