A systematic morphological study of Andrographis (Acanthaceae: Andrographinae) in India has revealed that the genus Haplanthus is distinct from Andrographis. We resurrect the genus Haplanthus here with four species, one of which contains three varieties. Five new combinations are proposed: H. laxiflorus, H. laxiflorus var. parishii, H. laxiflorus var. recedens, H. ovatus, and H. rosulatus. In addition, the following four names are lectotypified here: Gymnostachyum andrographioides, G. ovatum, G. parishii, and Haplanthus tener var. elongatus.

Additional Metadata
Keywords Andrographis, Haplanthodes, Haplanthoides, lectotypification, new combinations, reinstatement
Persistent URL dx.doi.org/10.3767/000651916X693185
Journal Blumea: Biodiversity, Evolution and Biogeography of Plants
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Released under the CC-BY 4.0 ("Attribution") License

Citation
Gnanasekaran, G, Murthy, G.V.S, & Deng, Y.F. (2016). Resurrection of the genus Haplanthus (Acanthaceae: Andrographinae). Blumea: Biodiversity, Evolution and Biogeography of Plants, 61, 165–169. doi:10.3767/000651916X693185