Spathoglottis Blume, Bijdr.: 400 (1825).
Synonyms:
Paxtonia Lindl., Edwards's Bot. Reg. 24(Misc.): 61 (1838).
Description:
Herbs terrestrial, without rhizome, with ovoid or globose pseudobulb, with 1--5 terminal leaves. Leaf petiole sheathed; leaf blade narrowly long, with plicate veins, base contracted into a stalk, without nodes, apex acuminate. Flower scape emerging from pseudobulb base, erect, unbranched, base with several sheaths, hairy or subglabrous; raceme sparsely few flowered; floral bracts shorter than pedicel with ovary; flowers gradually opening, medium-sized. Sepals similar, abaxially hairy. Petals similar to sepals and often wider; labellum spurless, adnate to column at base, 3-lobed; lateral lobes suberect, between two lobes often concave and saccate in between, adaxially often hairy; midlobe clawed, with appendage or carene at junction of claw and lateral lobe; column bent forward, subcylindrical, slender, upper part clavately enlarged, both sides with wings, without column foot; rostellum unlobed; pollinia 8, with 4 per group, narrowly obovate, subequal in size, waxy, commonly adhering to 1 triangular viscidia.
Distribution:
Trop. & Subtrop. Asia to Pacific
Species:

World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/monocots/ accessed 26/06/2020
Bibliography and References:
Cribb PJ, Tang CZ. 1982 Spathoglottis (Orchidaceae) in Australia and the Pacific Islands. Kew Bull., 36. (4): 721-729 (1982)
Green T. 1989 The genus Spathoglottis. Amer. Orchid Soc. Bull. 58. (11): 1121-1125 (1989)
Green T. 2001 Antique's giant Spathoglottis. Orchid Dig. 65. (2): 88-90 (2001)
Green T. 2002 Spathoglottis chrysodorus Green sp. nov. (Orchidaceae). Orchid Digest 66. (3): 141-142 (2002)
Green T. 2003 Spathoglottis sulawesiense Green, sp. n. (Orchidaceae). Orchid Dig. 67. (3): 151 (2003)
Howcroft NHS, Bandisch WH. 1992 Spathoglottis papuana Bail.: a note on its taxonomy and distribution. Orchadian 10. (9): 312-318 (1992)
Howcroft NHS. 1986 The taxonomy of Spathoglottis Blume. Orchadian, 8. (7): 139-150 (1986) -
Johnston FD. 1976 Spathoglottis plicata. Amer. Orchid Soc. Bull. 45. (10): 910 - 911 (1976)
Kurzweil H. 1987 Developmental studies in orchid flowers I: Epidendroid and vandoid species. Nordic J. Bot. 7. 427-42.
Lavarack B. 1994 Australasian orchids illustrated: no.15. Spathoglottis plicata Blume. Orchadian 11. (6): 259-261 (1994)
Lavarack PS. 1983 Spathoglottis plicata: a mystery solved. Orchadian, 7. (7): 160 (1983)
Lawie P. 1995 Spathoglottis paulinae in the Russell River Valley. Austral. Orchid Rev. 60. (3): 43-44 (1995)
Lubag Arquiza AM. 2006 Spathoglottis palawanensis and Spathoglottis philippinensis : two new orchid species from the Phillipines. Orchid Dig. 70. (3): 170-173.
Sheehan T, Sheehan M. 1974 Orchid genera, illustrated: 37. Amer. Orchid Soc. Bull. 43. (1): 32-33 (1974)
Teuscher H. 1978 Calanthe and Spathoglottis. Amer. Orchid Soc. Bull. 47. (4): 336 - 343 (1978