A taxonomic revision of Garcinia sections Dicrananthera and Macrostigma (Clusiaceae) in Thailand Author Ngernsaengsaruay, Chatchai 0000-0002-7131-976X Department of Botany, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand Author Chanton, Pichet https://orcid.org/0009-0001-7325-6109 Biodiversity Center, Kasetsart University (BDCKU), Chatuchak, Bangkok 10900, Thailand text PhytoKeys 2024 2024-11-07 248 339 360 journal article 10.3897/phytokeys.248.130311 Garcinia section Dicrananthera Pierre , Fl. Forest. Cochinch. 1 (5): 8. 1883; M. Gaudeul et al., PhytoKeys 239: 95. 2024 . Type. Garcinia thorelii Pierre, Fl. Forest. Cochinch. 1 (4): t. 62. 1882. Garcinia section Dicrananthera is distinguished by the presence of a pair of interpetiolar stipuliform structures (rare in Clusiaceae ); leaves with prominent, widely spaced secondary veins and scalariform tertiary veins; axillary or terminal cymose inflorescences with three to many flowers [i. e., G. yaatapsap (3–5 - flowered), G. paucinervis (4–10 - flowered), G. stipulata (4–6 - flowered), G. nujiangensis (6–10 - flowered), and G. thorelii (20–40 - flowered thyrse)]; flowers with 4 sepals and 4 petals; male flowers with numerous stamens united into an annular mass encircling and attached to the pistillode (i. e., G. stipulata and G. yaatapsap ) or united into 4 bundles surrounding the pistillode (i. e., G. nujiangensis , G. paucinervis , and G. thorelii ), 2 - thecous anthers; 1–2 - locular ovaries; unlobed and smooth stigmas; and fruits with a smooth surface and unlobed. Distinguishing morphological characters reported here for this section were taken from Pierre 1882 , Pitard 1910 , Chun and How 1956 , Jones 1980 , Li 1981 , Li et al. 2007 , Stevens 2007 , Gaudeul et al. 2024 , and from our observations. A section of five species worldwide ( Gaudeul et al. 2024 ); one species in Thailand .