Abstract
In the account of Strobilanthes Blume for the Flora of Ceylon the traditional broad view of the genus has been maintained and Bremekamp's attempt to divide it into numerous small genera has been rejected. This paper discusses some of the problems involved in attempting to define the segregate genera into which Strobilanthes was divided and discusses Leptacanthus, Mackenziea, Pseudostenosiphonium and Nilgirianthus in particular. Three new species are described: S. aurita from Southern India, S. hypericoides and S. pentandra from Ceylon, the latter a remarkable plant with five fertile stamens, anomalous in Acanthaceae as well as in Strobilanthes. The new names S. habracanthoides and S. anamallaica are coined for S. paniculata sensu T. Anderson and S. adenophora sensu Bedd. The infraspecific classification of S. sexennis is described and a key provided to distinguish the eight recognized varieties. Varieties are also described and discussed for S. diandra, S. rhamnifolia and S. walkeri. SEM photographs of pollen and illustrations of the new species are included.
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