A reconsideration of the generic circumscription of Heterostemma Wight & Arn. (Asclepiadaceae) and a new species from India

@article{Swarupanandan1989ARO,
  title={A reconsideration of the generic circumscription of Heterostemma Wight \& Arn. (Asclepiadaceae) and a new species from India},
  author={K. Swarupanandan and N. Sasidharan and Jose K. Mangaly},
  journal={Botanical Journal of the Linnean Society},
  year={1989},
  volume={101},
  pages={249-259}
}
Heterostemma Wight & Arn. (Asclepiadaceae) and a new species from India. Heterostemma vasudemni Swarupanandan & Mangaly, a new species belonging to Asclepiadaceae is described and illustrated. The discoid-urceoloate corolla and the staminal coronal scales with a ventral appendage show this species to be intermediate between the two genera Heterostemma and Oianthus. Basically, the concepts of the two genera differ only in a pair of characters which, in the light of the new species seem not to be… 
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