What is "thelasis"

Thelasis is a genus of flowering plants from the orchid family, Orchidaceae. It is native mostly to New Guinea and Southeast Asia but also with some species in southern China, the Himalayas, Queensland and various islands of the Indian and Pacific Oceans.

Species accepted as of June 2014:

1. Thelasis abbreviata (Schltr.) W.Kittr. - New Guinea
2. Thelasis angustifolia J.J.Sm. - New Guinea
3. Thelasis bifolia Hook.f. - Assam
4. Thelasis borneensis Schltr. - Borneo
5. Thelasis capitata Blume - Christmas Island, Thailand, Malaysia, Indonesia, Philippines
6. Thelasis carinata Blume - Queensland, Thailand, Malaysia, Indonesia, Philippines, New Guinea, Solomon Islands, Samoa
7. Thelasis carnosa Ames & C.Schweinf. in O.Ames - Sabah
8. Thelasis cebolleta J.J.Sm. - Borneo
9. Thelasis celebica Schltr. - Sulawesi
10. Thelasis compacta Schltr. - New Guinea
11. Thelasis copelandii Kraenzl. in H.G.A.Engler - New Guinea
12. Thelasis cycloglossa Schltr. - New Guinea
13. Thelasis edelfeldtii Kraenzl. in H.G.A.Engler - New Guinea
14. Thelasis gautierensis J.J.Sm. - New Guinea
15. Thelasis globiceps J.J.Sm. - New Guinea
16. Thelasis javanica J.J.Sm. - Java
17. Thelasis khasiana Hook.f. - Yunnan, Assam, Thailand, Vietnam
18. Thelasis longifolia Hook.f. - Nepal, India, Sikkim, Bhutan, Assam
19. Thelasis macrobulbon Ridl - Malaysia, Borneo
20. Thelasis mamberamensis J.J.Sm. - New Guinea
21. Thelasis micrantha (Brongn.) J.J.Sm. - Myanmar, Thailand, Vietnam, Malaysia, Indonesia, Philippines, New Guinea
22. Thelasis obtusa Blume - Bali, Java, Borneo, Sumatra, Philippines
23. Thelasis pygmaea (Griff.) Lindl. - Hainan, Hong Kong, Taiwan, Yunnan Nepal, Sikkim, Assam, Bhutan, Andaman & Nicobar Islands, Indochina, Malaysia, Indonesia, New Guinea, Bismarck Islands, Solomon Islands
24. Thelasis rhomboglossa (Schltr.) Kraenzl. in H.G.A.Engler - Sumatra
25. Thelasis succosa Carr - Malaysia
26. Thelasis variabilis Ames & C.Schweinf. in O.Ames - Sabah, Sarawak
27. Thelasis wariana (Schltr.) Schuit. & de Vogel - New Guinea