Abstract
Five new species of Thrixspermum (Orchidaceae) are described from Thailand, two from sect. Dendrocolla: T. alboluteum (South-West floristic region), T. praetermissum (East); and three from sect. Thrixspermum: T. simile (South-East), T. flammeum (East), T. polystictum (East). Descriptions, illustrations, notes on distribution, ecology, phenology, conservation status, and morphological comparisons with allied species are provided. Thrixspermum musciflorum and its variety nilagiricum are reduced to the synonymy of T. formosanum. Thrixspermum album is reduced to the synonymy of T. pulchellum. We select a lectotype and an epitype for T. trichoglottis (Hook.f.) Kuntze and provide a detailed description of this common but so far incompletely known species.
Aeridinae, section Dendrocolla, section Thrixspermum, Monocots
เอื้องแมงมุมส้ม
Thrixspermum flammeum Toolmal, Schuit. & Culham
เอื้องแมงมุมเหลืองปากหนา
Thrixspermum simile Toolmal, Schuit. & Culham
Thrixspermum polystictum Toolmal, Schuit. & Suddee
เอื้องตะขาบเหลืองตะนาวศรี
Thrixspermum alboluteum Toolmal, Schuit. & Culham
เอื้องตะขาบขาว
Thrixspermum praetermissum Toolmal, Schuit. & Suddee
Nopparut Toolmal, Somran Suddee, Alastair Culham, Timothy M. A. Utteridge and André Schuiteman. 2023. Taxonomic Notes on Thrixspermum (Orchidaceae: Aeridinae), with Five New Species from Thailand. Phytotaxa. 601(3); 223–262. DOI: 10.11646/phytotaxa.601.3.3