PhytoKeys 17: 25–26, doi: 10.3897/phytokeys.17.4013
Two new combinations in the genus Distephanus Cass. (Asteraceae, Vernonieae)
Harold Robinson 1
1 Department of Botany, MRC 166, National Museum of Natural History, Smithsonian Institution, Washington, DC. 20023-7012

Corresponding author: Harold Robinson (

Academic editor: Vicki Funk

received 17 September 2012 | accepted 20 September 2012 | Published 21 September 2012

(C) 2012 Harold Robinson. This is an open access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC-BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

For reference, use of the paginated PDF or printed version of this article is recommended.


New combinations are provided in Distephanus for two species from Madagascar.


Compositae, Madagascar


In the process of recognizing the proper limits of Distephanus Cass. a number of combinations have already been made (e. g., Robinson and Khan 1986) and a number of combinations remain to be done. The following two combinations are needed now because of recent entries in GenBank. Descriptions of both species can be found in Humbert (1960).


Distephanus ambongensis (Humbert) H. Rob., comb. nov. Basionym: Vernonia ambongensis Humbert, Bull. Soc. Bot. France 87: 346. 1940.

Distephanus bara (Humbert) H. Rob., comb. nov. Basionym: Vernonia bara Humbert, Notul. Syst. (Paris) 8: 9–10. 1939.

Humbert H (1960) Flore de Madagascar et des Comores. 189e Famille – Composees, vol. 1. Typographie Firmin-Didot, Paris.
Robinson H, Khan B (1986) Trinervate leaves, yellow flowers, tailed anthers, and pollen variation in Distephanus Cassini (Vernonieae: Asteraceae). Proc. Biol. Soc. Wash. 99: 493-501.