Notes on calycophyllous Rubiaceae .1. Morphological comparisons of the genera Chimarrhis, Bathysa, and Calycophyllum, with new combinations and a new species, Chimarrhis gentryana

A comparison of some genera of the Condamineeae (Rubiaceae) with a few taxa of closely related tribes (Rondeletieae, Calycophylleae, and Cinchoneae) revealed that some species of Chimarrhis (Condamineeae s. 1.), Bathysa (Rondeletieae), and Calycophyllum (Calycophylleae) are often misassigned to genera. The taxonomic significance of calycophylls is discussed; the generic boundaries of Chimarrhis, Bathysa, and Calycophyllum are reevaluated; and their similarities and differences are discussed. As a result, a new calycophyllous species of Chimarrhis from the Amazon, C. gentryana, is described, two of its species are transferred to Bathysa (B. Bathysoides, B. perijaensis), and one species of Bathysa (B. difformis) is reduced to synonymy under Chimarrhis (C. turbinata).