The Cactus and Succulent Plant Mall
The Cactus and Succulent Plant Mall

CSSA Haseltonia 6, 1998
Notes on the genus Blossfeldia (Cactaceae) in ArgentinaBeat Ernst Leuenberger & Urs Eggli
Plectranthus fasciculatus (Lamiaceae), a new species from north-eastern Queensland, AustraliaPaul I. Forster
A new cholla from Baja CaliforniaJon P. Rebman
The effectiveness of two bat species as pollinators of two species of columnar cacti on CuracaoSophie Petit
Chromosome numbers in some cacti of western North America -- VIIDonald J.Pinkava, Jon P.Rebman & Marc A.Baker
Ethnobotany of Stetsonia coryne (Cactaceae), the "cardón" of the Gran ChacoPastor Arenas & Gustavo Scarpa
Stem-surface sculpture: a potentially valuable character in some cacti as shown by a survey of stem microstructureHugh Glen & David Hardy
Chromosomes and hybrids of Echeveria (Crassulaceae) VI. Series Angulatae Walther and Pruinosae WaltherCharles Uhl
Propagation of Mammillaria candida by tissue culture techniquesMiguel Angel Alías-Rocha, María del Socorro Santos-Días & Alberto Arredondo-Gómez
Euphorbia gradyi (Euphorbiaceae), a new stem-succulent euphorbia from MexicoVictor Steinmann & Angélica Ramírez-Roa.
Notes on Archer's (1992) Kenya Ceropegia ScrapbookPatrick Siro Masinde
COVER: Many South African succulents lead an almost subterranean existence, with only their leaf-tips emergent, thus lessening dessication in hot, arid habitats. However, the resultant disadvantage is that less light is available. There are species of Aizoaceae (Lithops, Conophytum, Fenestraria, Frithia) and of Asphodelaceae (Bulbine) that avoid this problem by means of transparent leaf-tips,which allow sunlight to penetrate below ground to the chlorophyll-bearing portion of the leaves.

Our cover photo shows a species from yet another family with "window plants", the Aloaceae. Haworthia cooperi, with remarkably glass-like leaf-apices, inhabits the dry grassveld of the Eastern Cape of Soth Africa. The photo by John Trager is of a plant, cultivated by Kobus Venter (#91/85/2), originally from west of Ft. Brown, South Africa.

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