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This genus is accepted, and its native range is Tropical & Subtropical Asia to SW. Pacific.
Pomatocalpa armigerum


The 13 species of Pomatocalpa are collectively distributed from India and Sri Lanka through Malesia and northern Australia to Fiji, north to northeastern Himalayas and China (Hainan and Taiwan).


All species are epiphytes or lithophytes at 0–750 m in swamp and coastal rocky forests, mangrove and beach forests, and dipterocarp forests.

General Description

Rambling (up to 5 m long), epiphytic, occasionally lithophytic herbs. Stem pendent or ascending, sometimes clambering, simple, with a few to many nodes covered by leaf-sheaths. Leaves distichous, linear to oblong, sometimes falcate, usually unequally bilobed or retuse, flat, coriaceous, articulate to a sheathing base. Inflorescences lateral, penetrating the leaf-sheaths, racemose or paniculate, with the flowers clustered in the distal portion of each racemose branch, erect or pendent, many-flowered; peduncle shorter or longer than rachis (or the terminal rachis branch in panicles), glabrous, minutely papillose or distinctly pubescent; rachis with flowers opening from base of inflorescence; floral bracts persistent, triangular, acute to acuminate, erose. Flowers resupinate or not, usually widely opening, rarely scented. Sepals and petals free, similar, spreading. Labellum firmly attached to column, trilobed, shortly spurred, side lobes erect, deltoid or triangular, the back edge of each lobe usually producing a right angle to the front edge, midlobe fleshy, often recurved, usually suborbicular or ovate-triangular; spur bucket-shaped, front wall thicker than back wall, back wall with a projecting erect, rectangular, bifid to subtruncate, ligulate appendage reaching or exserted beyond the entrance to spur. Column erect or slightly recurved, column foot absent; anther cap shortly beaked, pollinia four, arranged as two unequal pairs, waxy, semi-globular, solid, with a long common stipe and a single, usually concave viscidium; rostellum hammer-shaped, bifid after removal of the pollinarium, shorter than diameter of column.


No uses have been reported for Pomatocalpa; it is occasionally cultivated.

Native to:

Andaman Is., Assam, Bangladesh, Borneo, China Southeast, East Himalaya, Fiji, Hainan, India, Jawa, Laos, Lesser Sunda Is., Malaya, Maluku, Myanmar, New Guinea, Nicobar Is., Philippines, Queensland, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Vanuatu, Vietnam

Pomatocalpa Breda appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Feb 1, 1998 Yong, R. [40], Malaysia 70740.000
Collenette, S. [2268] 45198.000

First published in Gen. Sp. Orchid. Asclep. 3: t. 15 (1829)

Accepted by

  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2014). Genera Orchidacearum 6: 1-544. Oxford University Press, New York, Oxford.

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Herbarium Catalogue Specimens

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.