Dendrocereus Britton & Rose – one species or two?

Dendrocereus is comprised of two taxa, which have hitherto lacked clear morphological characters to distinguish them specifically. In this study we demonstrate that seedling, juvenile and possibly seed morphology provide ample justification for the recognition of two species: D. nudiflorus in Cuba and D. undulosus in Hispaniola, whose conservation status is also discussed.