Dalbergia horrida is a species of thorny liana, with the Vietnamese name trắc nhiều hoa (under the synonym D. multiflora = 'many flowers') which is in the subfamily Faboideae and tribe Dalbergieae.
The Catalogue of Life lists:
D. h. glabrescens (Prain) Thoth. & Nair
Media related to Dalbergia horrida at Wikimedia Commons
Data related to Dalbergia horrida at Wikispecies
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*All information is based on published scientific research