Abstract
The new species, Hoya phuwuaensis is described and illustrated. It was discovered in Phu Wua Wildlife Sanctuary, Bueng Kan Province, northeastern Thailand. Hoya phuwuaensis is similar to the widespread and common species H. caudata. Both species have prominent mottling of silver spots on the adaxial leaf surface and positively geotropic inflorescences with slender peduncles. However, the new species can be distinguished from H. caudata by its elliptic leaf with cuneate base, obovate-oblong corona lobe and triangular anther appendages.
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