CSSA VOL.68 NOVEMBER-DECEMBER, 1996 No.6 South American Cactus Log - last chapter Alfred Lau The genus Opuntia in the Galápagos Islands Edward F. Anderson The genus Adenium in cultivation. Part 6: Selected Hybrids Mark A. Dimmitt Euphorbia astrophora J. G. Marx, sp. nov., a new species of Euphorbiaceae from the Eastern Cape Prince, South Africa Gerhard Marx Cryptanthus warasii Dorothy Byer CSSA Friend Award commends James P. Folsom Larry W. Mitich Valley View Succulent Notes Gerald S. Barad Cacti & Succulents for the Amateur Duke Benadom Spotlight on Round Robins Braden Engelke & Rita Fleischmann Index

Cover illustration: This gigantic specimen of Opuntia echios var. barringtonensis was photographed in 1966 by Edward F. Anderson on Barrington Island, one of the Galapagos Islands; the late Richard O. Albert of Texas is dwarfed by its forth-inch-thick trunk. In this issue Dr. Anderson tells us much about the opuntias of the Galapagos and how the ecology of the islands shaped their evolution.