Ophiorrhiza ripicola Craib (Rubiaceae) is reported here for the first time from Arunachal Pradesh, India. It is differing from other Indian Ophiorrhiza species by having triangular stipules, cuneate lamina base, corolla white-purple, 32 mm long, glabrous outside and pubescent inside, and filaments 14 mm long. Detailed description, digital images, distribution, habitat and ecology are presented for easy identification.
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