This unfortunate bull came afoul of a few stems of jumping cholla (Cylindropuntia fulgida). The spines of this cactus are decorated with backward-facing barbs that facilitate entry into flesh, but ...

Furthermore, such consideration of the taxa in the more derived Opuntioideae (comparing the genera from most ancestral to most derived, that is, Austrocylindropuntia → Quiabentia → Pereskiopsis → ...

A native Christmas cactus for your collectionThe Christmas cholla, or Cylindropuntia leptocaulis, as its scientifically known, bears bright, red fruit this time of the year — like ornaments on a ...