*`SECTION Trias [Lindl.] J J Verm, Schuit & de Vogel 2014
Synonyms *Trias Lindley 1830
Type: Trias oblonga Lindley 1830 = Bulbophyllum oblongum (Lindl.) Rchb.f. 1861
Characterized by the creeping rhizome giving rise to shoots arising from nodes beneath the distinct pseudobulbs, not fused to them, and carrying a single, apical, persistent, thick leaf that blooms on nodes beneath the pseudobulbs, a solitary to few fasciculate, single flowered inflroescence with 2 to 3 bracts and tubular floral bracts, The basal node of the pedicel is level witht the attachment of the floral bract or not. The resupinate flowers have free, equal sepals with the dorsal having 3 to 7 veins and the laterals have 5 to 9 veins. The petals ghave 1 to 3 veins. The undivided to auriculate, mobile lip is on a thin ligament and the column has the rostellum anterior suface receding in betweeen the stelida, which is half the length of the column or shorter, and deltoid to triangular in shape. There are 4 pollina with the innermost more than half as long as the outer ones.
This section has 13 species occuring in forests at elevations up to 650 meters in India, Myanmar and Thailand
Entries below with an asterix are listed in publications by J J Vermeullen and so are more likely correct than ones without. Species with a question mark in front, seem to me to not conform and so please use with caution.
References Genera Orchidacearum Vol 6 Epidendroideae Pt 3 Pridgeon, Cribb Chase & Ramussen 2014; *Phytotaxa 166 (2): 101–113 J.J.Verm., Schuit. & de Vogel 2014