CSSA VOL.90, 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 and 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 SantosFava, 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 Cental Spain Ray Stephenson Chipping and chmical 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 structues are of interest in his article.