| Editorial | Alan Butler |
| Caralluma burchardii N.E. Brown in one of its habitats on the island of Fuerteventura (Canary Islands) | Massimo Afferni |
| Medicinal Milkweed Tubers and Roots 2 | Bruce Hargreaves |
| A Key for Hoya Species Centre pages ( ix-xxx ) | Dale Kloppenburg |
| Stapeliad cultivation in Australia | Carol Griesser |
| Letters to the Editor |
| Front Cover: Xysmalobium heudeloianum with monarch butterfly, NE Angola, May 2011. Example of the classic association between monarch butterflies and Asclepias ssp. (Xysmalobium is part of the Asclepias complex of genera) (picture by David Goyder) |
