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This genus is accepted, and its native range is Mascarenes, Tropical & Subtropical Asia to Mongolia and Pacific.
Glossula sp.nov.

[O-EM]
Distribution

A genus of 70-75 species in eastern Asia, south-eastern Asia, the Malay Archipelago, north-eastern Australia, the Philippines, and south-western Pacific islands. (PC).

Ecology

Peristylus species grow in Nepal and southern China at 2000- 2500 m. Peristylus fallax Lindl. occurs between 2700 and 3700 m from Garhwal to Sikkim in the Himalayas. Other members of the genus occur at lower levels; P. lawii grows in Nepal and India at 400-1000 m (Hara et al. 1978). Some Peristylis species grow in habitats with full sunlight. For example, P. brevilobus Thw. is found in hill cuttings in the Himalayas growing in the open with other terrestrial orchids and non-orchid herbs. Other Peristylus species grow under the shade of trees in montane temperate forest, subtropical montane forest, or tropical wet evergreen forests and in a moist substrate especially on the banks of streams. The flowering period of Peristylus varies according to species, with some flowering between September and February and others from April to August. The genus includes some narrowly endemic species with restricted distributions, such as the rare Himalayan endemics P. brevilobus Thw. and P. trimenii (Hook.f.) Abeyw. (Dassanayake 1981), but other species are common in favourable habitats. In China Peristylus occurs in the following regions: Hainan and the South China Sea islands, Jiangsi, Kwangsi, Guangxi, Guangdong, Sichuan, and Yunnan (Chen and Tang 1982). Renz and Vodonaivalu (1989) noted that Peristylus is the dominant member of 'Habenariinae' in Melanesia, such as Fiji. (RN).

General Description

Small to medium-sized terrestrial plants with small oblong to ellipsoid tubers. Leaves several, in a basal rosette, clustered in the middle of the stem or spirally arranged along stem, ovate to lanceolate or oblanceolate, sheathing at the base, thin-textured. Inflorescence terminal, sparsely to densely flowered; bracts lanceolate, as long as or shorter than the flowers. Flowers resupinate, small, spirally arranged, green or yellowish green, perianth persistent in fruit. Dorsal sepal and petals entire, free, connivent or slightly spreading, lateral sepals oblique. Labellum connate at base with margins of column, distally three -lobed or entire, larger than the sepals and petals, often clawed at the base, spurred at the base, ecallose or with a fleshy callus in front of the mouth of the spur; spur scrotiform to cylindric, shorter than to longer than the labellum, usually shorter than the ovary. Column short, conical, erect; anther bilocular, with adjacent loculi; lateral appendages sessile; pollinia two, shortly clavate, sectile; viscidia two, ovate to oblong; rostellum small, trilobed but with lateral lobe short and mid-lobe smaller than anther loculi; stigmatic arms two, remote, sessile, convex or depressed centrally, adnate to base of lip and lateral appendages. Ovary almost lacking a pedicel. (PC).

Native to:

Andaman Is., Assam, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, Caroline Is., China South-Central, China Southeast, Cook Is., East Himalaya, Fiji, Hainan, Hawaii, India, Japan, Jawa, Korea, Laos, Lesser Sunda Is., Malaya, Maluku, Mauritius, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, Nicobar Is., Philippines, Queensland, Réunion, Samoa, Society Is., Solomon Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Tonga, Vanuatu, Vietnam, Wallis-Futuna Is., West Himalaya

Peristylus Blume appears in other Kew resources:

First published in Bijdr. Fl. Ned. Ind.: 404 (1825)

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. (2001). Orchidoideae (Part 1) Genera Orchidacearum 2: 1-416. Oxford University Press, New York, Oxford.

Art and Illustrations in Digifolia
Digital Image © Board of Trustees, RBG Kew

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Orchideae: e-monocot.org
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