Argyreia pseudosolanum Traiperm & Suddee, sp. nov. from the NE region of Thailand is described and illustrated. The new species is remarkable in having a very distinctive corolla shape similar to Solanum, and staminal filament bases glabrous or nearly glabrous with a few multicellular, uniseriate hairs at the attachment point on the corolla tube. Detailed descriptions, illustrations, a summary of the ecology and an IUCN conservation status are provided.
Keywords: Phu Langka; SE Asian biodiversity; filament morphology; new species discovery; staminal trichomes; taxonomy.
Paweena Traiperm, Somran Suddee.