CSSA VOL.88, March-April 2016 No.2 |
Many cacti have leaves on their "flowers" | James D.Mauseth |
Dorstenia horwoodii Rzpecky sp. nov. From nudum to novum a fortyish year hiatus | Alain Rzepecky |
Along the way with Woody | Attila Kapitany |
Obituary: Gerald S. Barad | Myron Kimnach |
Extension of the distribution of Melocactus ernestii Vaupel (Cactaceae) in the Northeastern Brazil: a new occurrence for the state of Ceará | Amanda Christina Dantas de Souza, Alice Calvente, Jomar Gomes Jardim & Leonardo de Melo Versieux |
Beginners guide to geophytic Othonna | Tom Glavich |
Pushing the limits with cacti & succulents in cold climates #16 | Leo Chance |
On the cover: This specimen of Arrojadoa rhodantha was captured in bud by Jim Mauseth and is part of a teaching collection of cacti, succulents and other exotic plants located at the University of Texas in Austin. As with other arrojadoas, it grows cyclically. It first produces a vegetative shoot about 10 inches long with areoles that cannot flower. The shoot then produces several areoles tightly clustered together at the shoot's tip; these terminal areoles produce long red spines, then flowering branches emerge from among these spines. After a few weeks, the cycle begins again as a new vegetative shoot emerges from among the flowering areoles. |
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