CSSA VOL.89, September-October 2017 No.4 Molecular analysis of the genus Eriosyce Fred Kattermann A new species of Aloe from the Lúrio waterfalls in Mozambique Tom A McCoy, Antonius JH Rulkens and Obety Jose Baptista An introduction to cactus areoles part II James D Mauseth Book Review: The Genus Ceropegia Tim Harvey Pushing the limits: landscaping with cacti and succulents in cold climates #26 Leo Chance Obitary: Sheila Colnette Tom A McCoy Book Review: Succulents in cultivation - breeding new cultivars Tim Harvey On the cover: Aloe collenettae is critically endangered in habitat, where it is restricted to a single hill. Tom McCoy has visited the population many times, and the dramatic cover image captures the bleakness of the spot well. It also serves as a fitting tribute to Sheila Collenette, for whom the plant is named.