A taxonomic revision of Dolianthus C.H. Wright (Rubiaceae-Psychotrieae) is presented, including a key to species, full descriptions, distribution maps, and a list of specimens examined. Eleven species are transferred from Amaracarpus to Dolianthus, resulting in ten new combinations. Two species are described as new to science: D. kairoi and D. ovatifolius. In total, thirteen species are included in Dolianthus. Dolianthus is endemic to the highlands (montane to subalpine and alpine zones) of Papua New Guinea.

Amaracarpus, Dolianthus, Psychotria, Psychotrieae, Papua New Guinea
Blumea: Biodiversity, Evolution and Biogeography of Plants

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Naturalis journals & series

Davis, A. P., & Bridson, D. M. (2001). A taxonomic revision of the genus Dolianthus (Rubiaceae). Blumea: Biodiversity, Evolution and Biogeography of Plants, 46(3), 421–446.