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Abstract
Ant Plant Apocynaceae Asclepiadaceae Dischidia Ecology Morphology Taxonomy
Two new species, Dischidia dohtii Tran & Livsh. and D. cornuta Livsh., are described and illustrated. Dischidia rimicola Kerr is illustrated for the first time. All three species are associated with tree-nesting ants of the genus Crematogaster. Presentation
experiments with seeds of D. rimicola indicate that they are attractive to the ants. The possible affinity between D. dohtii and the enigmatic D. khasiana Hook.f. from north-eastern India is discussed; D. khasiana is lectotypified. A key to the 14 species of Dischidia
documented from Vietnam and Laos and a list of exsiccatae are provided.