The Hedyotis-Oldenlandia complex belonging to Rubiaceae, is one of the most intricate
yet interesting taxonomic complexes in existence. It is known for its wide range of
morphological diversity and the long standing taxonomic incomprehensibility by generic
delimitations. The group comprises approximately 500–600 species, globally
[Groeninckx et al., 2009; Govaerts et al., 2014]. However, in India, it is represented by
only 74 species [Dutta & Deb, 2004].