Research Paper

The taxonomy of Dischidia ruscifolia (Apocynaceae, Asclepiadoideae) and the description of a new species, Dischidia argentii

Muhammad Jefte Arshed, John Rey Callado, Danilo Tandang, Akiyo Naiki, Esperanza Maribel Agoo, Michele Rodda

Published on: 03 November 2021

Page: 496 - 503

DOI: 10.6165/tai.2021.66.496


We document the taxonomic history of Dischidia ruscifolia Decne ex Becc. After a critical study of the available original material and additional specimens an epitype is designated. We confirm that D. myrtillus is a synonym of Dischidia ruscifolia and the name is typified. Clarification of the identity of D. ruscifolia allowed the identification of a new species that is here published and illustrated as Dischidia argentii Arshed, J.R. Callado & Tandang. The new species differs largely in its floral morphology and particularly in its glabrous corolla throat, absent corolline corona, gynostegium outline, and pollinium shape.

Keyword: Epiphyte, epitype, lectotype, Philippines, typification

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