CSSA VOL.68 MAY-JUNE, 1996 No.3 Distribution and population density of Coryphantha hesteri in the Big Bend region of Texas Gerald G. Raun In search of Gasteria stayneri Poelln. (Aloaceae) in the Eastern Cape Province, South Africa Gideon F. Smith Aloe chrysostachys and Aloe meruana(Aloaceae) Leonard E. Newton Yucca linearis, a unique species from the Chihuahuan Desert David J. Ferguson Myrmecodia lamii, a giant ant-plant of Irian Jaya Myron Kimnach Idrioddities - outlandish expressions of Idria columnaris Reid Moran Cacti & Succulents for the Amateur Duke Benadom The bat-cactus mutualism of Curaçao Sophie Petit Two geophytic euphorbias from western Mexico Burl L. Mostul & Miguel Cházaro B. Some new combinations in Rhipsalis Myron Kimnach

Cover illustration: Pelecyphora aselliformis is a collector's favorite, native only to the state of San Luis Potosí, Mexico. The appeal lies in the peculiarly-shaped tubercles and showy flowers, plus the challenge of growing it successfully. This superb photo is by Darl Bickel, who received his plant as a half-inch graft nine years ago. After two years he removed and rooted the scion. Although he keeps most of his other cacti dry all winter, he does give this plant a light monthly watering to prevent the drying and shedding of the lower tubercles.