CSSA VOL.73, September-October 2001 No.5 Rebutia - an overview Myron Kimnach Those pesky numbers in Sulcorebutia John Pilbeam Rebutias Dylan P.Hannon Rebutia - one genus or two? Johan Pot Sulcorebutia or Rebutia? Günter and Karin Hentzschel Sulcorebutia, Kakteenzwerge der bolivianischen Anden - Book Review Myron Kimnach Superb Succulents Duke Benadom The decline of the type locality of Rebutia canigueralii Brian Bates Some critical comments about the IOS Cactaceae Consensus Group's concept of Rebutia Günther Fritz Collections of Rebutia, Sulcorebutia and Weingartia on the 1984 Huntington expedition Myron Kimnach Growing rebutias - a recipe for success Paul Hoffman Fred Katterman, a new Fellow Larry Mitich Fieldnotes: another look at Mammilaria bombycina and M.perezelarosae, and something new : M.perezelarosae ssp.andersoniana W.A. and Betty Fitz Maurice

Cover illustration. Befitting a special issue on Rebutia, Sulcorebutia and Weingartia, our cover photo displays R..muscula Ritter & Thiele. A more conservative viewpoint has reduced it and ten other rebutias to synonymy under R.fiebrigii, a matter about which we remain neutral. R.muscula, like all of its allies, hails from Bolivia; it is distinguished by its soft white spination and orange flowers. John Trager photgraphed this specimen at a CSSA show in 1985.