Taxonomy identifies four Garcinia species in Thailand, suggesting conservation measures for two vulnerable taxa.
Garcinia section Discostigma (Clusiaceae) is revised for Thailand with four species: G. merguensis , G. minutiflora , G. rostrata , and G. santisukiana . Morphological descriptions, illustrations, and an identification key to the species are provided, along with notes on distributions, habitats and ecology, phenology, preliminary conservation assessments, etymology, vernacular names, uses, and specimens examined. Two taxa, Garcinia brevirostris and G. calophylla , are newly synonymised under G. rostrata . Nine names are lectotypified here, including four associated synonyms of Garcinia merguensis –G. merguensis var. truncata, G. merguensis var. pyramidata, G. fulva , and G. lanceolata —as well as G. rostrata and four associated synonyms of G. rostrata : G. brevirostris , G. calophylla , G. gitingensis , and G. wrayi . Two species, Garcinia minutiflora and G. santisukiana , have a conservation status of Vulnerable [VU], while the other two species, G. merguensis and G. rostrata , have a conservation status of Least Concern [LC].
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Ngernsaengsaruay et al. (2025) studied this question.
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