CSSA VOL.73, November-December 2001 No.6 The vanishing thorn forests of Madagascar Part I Mark Salak Introducing a new Fellow: Roberto Kiesling Larry Mitich Succulent Flora of Southern Africa - Book Review Steven Hammer Whatever became of Congdonia Reid Moran Mammillaria nana a new look W.A. & Betty Fitz Maurice Superb Succulents Duke Benadom Richtersveld, the Enchanted Wilderness - Book Review Danile L.Mahr & Steven A.Hammer A new species of Rhytidocaulon (Apocynaceae-Asclepiadaceae) from south-eastern Yemen John Lavranos & Bruno Mies Sclerocactus mariposensis - Notes Larry W. Mitich Rebutia rebuttoned David Hunt A new Chihuahuan Desert hybrid prickly pear, Opuntia x rooneyi (Cactaceae) M. Patrick Griffith Bradleya 19/2001 - Book Review Michael Hawkes Index for Volume 73 Compiled by Phyllis Flechsig

Cover illustration: The Destruction of Madagascar's flora, outlined in Mark Salak's article in this issue, is well illustrated by this poignant photo of a native boabab Adonsonia za. This old specimen in its dormant leafless state, appears drowning in an ocean of the Mexican fiber plant , Agave sisalana, which, except for the uncleared strip at the right, has taken the place of the original thorn forest. Myron Kimnach took this photo near Berenty in September 1993.