Thismia Griffith (1845: 221)

Kumar, Pankaj, Gale, Stephan W., Li, Ji-Hong, Bouamanivong, Somsanith & Fischer, Gunter A., 2017, Thismia nigricoronata, a new species of Burmanniaceae (Thismieae, Dioscoreales) from Vang Vieng, Vientiane Province, Laos, and a key to subgeneric classification, Phytotaxa 319 (3), pp. 225-240 : 230

Thismia Griffith (1845: 221) .

Ophiomeris Miers (1847: 328) , Sarcosiphon Blume (1849: 65) , Tribrachys Champion ex Thwaites (1864: 325) nom. inval., Myostoma Miers (1866: 474) , Bagnisia Beccari (1878: 249) , Geomitra ( Beccari 1878: 250) , Rodwaya Mueller (1890: 116) nom. inval., Triscyphus Taubert (1895: 66) , Glaziocharis (Taubert ex Warming 1901: 175) , Scaphiophora Schlechter (1921: 39) , Triurocodon Schlechter (1921: 41) , Mamorea de la Sota (1960: 43) .

Type:— Thismia brunonis Griffith (1845: 221) .

Terrestrial, mycoheterotrophic herbs with tubers or coralloid roots. Stems unbranched. Leaves present or absent; if present, vestigial, scaly and colourless. Inflorescence terminal, solitary or more than 1, cymose or paniculate. Flowers actinomorphic or zygomorphic, often vibrantly coloured or colourless. Perianth campanulate, forming an urceolate, cylindrical or obconical tube. Tepals 6, free or inner 3 fused to form a mitre above the floral tube. Stamens 6, rarely 3, epipetalous, suspended inside the perianth tube, forming a staminal tube or reflexed outside, thecae connate or fused, dehiscing longitudinally, connective adnate. Ovary inferior, unilocular with 3 parietal placentas, ovules numerous, style short, thick; stigma 3, free or fused. Fruit cupular or a dry capsule. Seeds numerous, attached to the 3 parietal placentae, dust-like. Embryo undivided, homogeneous.