Dieffenbachia Batistae and D. mortoniana (Araceae, Aroideae, Spathicarpeae), New Species from Panama

Dieffenbachia (Araceae) currently comprises 57 species described from Mexico, through Central America, the West Indies, Trinidad to South America. Our comprehensive revision of herbarium specimens and recent explorations in remote areas of Panama, identified two new endemic species of Dieffenbachia: D. batistae O. Ortiz & Croat and D. mortoniana O. Ortiz & Croat. Descriptions, taxonomic comments, conservation notes and photographs of the new species are provided.