CSSA VOL.90, Fall 2018, No.3 John Jacob Lavranos 1928-2018 Tim S. Harvey The Echeverias of the Chillón River Valley, Lima, Perú Guillermo Pino & Graciela Vilcapoma Segovia Saving the Queens Bill Thornton A monstrous form of Stapelia engleriana Joseph A. Rard Pushing the limits: landscaping with cacti and succulents in cold climates #28 Leo Chance Curator's notes on growing cacti, part 1: soils and containers Andrew Gdaniec & Olwen M. Grace An illustrated field guide as a tool for the conservation of cacti species in the Brazilain Chaco Vanessa Gabrielle, Nóbrega Gomes, Wellington Santos Fava, Paulo Robson Sousa, Daniella Zappi & Andréa Cardoso Araujo Cacti of northwestern Peru - the CSSA field trip of August 2016 part II James D. Mauseth Four of the world's tiniest succulents grow together in Central Spain Ray Stephenson Chipping and chemical scarification effects on Sclerocactus glaucus (K.Schum.) L.D.Benson (Cactaceae) seed germination Nancy D. Riley & Terry Z. Riley Arecesocereus: a new subgenus of Cereus Michael A. Wisney

On the cover: Looking more like a piece of modern art, this section of rib from Neoraimondia arequipensis shows the characteristic elongated areoles. Jim Mauseth tells why these particular structures are of interest in his article.