CSSA VOL.80, July-August 2008 No.4 How Many Saguaros? Bill Thornton Agave pelona and Agave zebra in the Sierra El Viejo Greg Starr, Brian Kemble and Rob Norton Some succulent memories : Part 6. Harry Johnson, Ed Hummel, and others: my annual nursery tours Myron Kimnach Stalking the wild Lophophora: Part 1. Chihuahua and Coahuila Martin Terry Notes on Madagascar's white-flowering, non-arborescent pachypodiums and description of a new subspecies Jonas Lüthy Camelhair brush confidential Forsaking the brush -- Vegetative propagation of Operculicarya Danile M.Houston and Joseph M.Stead Book Review: Cacti of Texas: A Field Guide by A Michael Powell, James F L Veedin, and Shirley A Powell Martin Terry Book Review: Little Big Bend: common, uncommon, and rare plants of Big Bend National Park by Roy Morey D Russell Wagner Graptopetalum glassii Recently described born Colima, Mexico Miguel Chazaro-Basañez and Raul Acevedo-Rosas Fouquieria burragei A rare species from southern Baja Root Gorelick Commiphora gracilifrondosa A spectacular species from South Africa's Northern Cape Province Charles Craib Succulents on Stamps: Pereskia Peg Spaete

On the cover This beautiful specimen of Agave pelona was found growing on a craggy limestone ridge in the Sierra El Viejo, located in Sonora, Mexico, one of only four isolated mountain ranges where this species is known to occur. Among its many charms are long dagger-like leaf tips, an absence of teeth along the leaf margins, deep-red flowers, and the leaves' purple blush, which appears to be genetic, rather than droughtinduced. It and a companion plant at this site, Agave zebra, were observed on three recent trips (see page 170) conducted by Greg Starr, Brian Kemble, and Rob Nixon, who captured this image for our cover.