Systematics of the Thai Hypericaceae Juss. and Kielmeyeroideae (Clusiaceae Lindl.)

Abstract

The Clusiaceae (Subfamily Kielmeyeroideae) and Hypericaceae families are fully revised for Thailand. 33 species are recognised in six genera, these are; Calophyllum Linnaeus, Kayea Wallich, Mammea Linnaeus and Mesua Linnaeus in Clusiaceae (Subfamily Kielmeyeroideae) and Cratoxylum Blume and Hypericum Linnaeus in Hypericaceae respectively. Descriptions, full synonyms relevant to the Thai taxa, distribution maps, line drawings, ecology, phenology, vernacular names and specimens examined are given. One name change is made: Cratoxylum cochinchinense (Lour.) Blume is changed to Cratoxylum chinense (Retz.) Merr and all species previously in the genus Mesua have been moved to the genus Kayea, except Mesua ferrea Linnaeus.