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Hoya thuathienhuensis and Hoya graveolens (Apocynaceae Asclepiadoideae) a new species and a new record for the Flora of Vietnam
Rodda M; Bách Trân T; Juhonewe SN; Ngoc Sâm L
Blumea - Biodiversity Evolution and Biogeography of Plants
A new species from the Annamite mountain range of central Vietnam Hoya thuathienhuensis is here described and illustrated. Its flowers bear similarity with Hoya lockii a taxon recently described from the same area with which it shares the reflexed corolla and the thin coriaceous laves. Hoya lockii is an epiphytic shrub whereas H. thuathienhuensis is a strong climbing liana. We also report the noteworthy extension into southern Vietnam of Hoya graveolens a taxon previously considered to be endemic of Thailand.
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