Skip to main content
This genus is accepted, and its native range is Indian Subcontinent to SE. China and Indo-China.

[A-EM]
Distribution

Cleisostomopsis includes two species, C. eberhardtii from China (southwestern Guangxi) to Vietnam and C. elytrigera (Seidenf.) Szlach. from Thailand.

Ecology

Cleisostomopsis eberhardtii is epiphytic on tree trunks at 600 m in China.

General Description

Epiphytic herbs. Stems spreading to pendent, enclosed in leafsheaths, many-leaved. Leaves terete, fleshy, obtuse, 5–15 cm long, 2 mm in diameter, articulate to a sheathing base. Inflorescence lateral, up to 10 cm long, piercing leaf-sheaths, racemose, many-flowered; floral bracts 2 mm long, triangular shorter than ovary. Flowers white, labellum midlobe lilac. Sepals free, 2.2 × 1.6 mm, lateral sepals slightly larger than dorsal sepal, ovate-elliptic, obtuse. Petals 2 × 1 mm, ovate, rounded. Labellum adnate to column base, spurred, trilobed, side lobes 0.3 mm long, broadly ovate, erect, rounded, midlobe 1 mm long, ovate, cymbiform, acute and incurved; spur 3.0–3.5 mm long, cylindrical-clavate, dilated toward apex, interior with a Y-shaped callus on back wall but without septum. Column without a foot; pollinia four in two pairs, waxy, semi-globular, each pair with a caudicle, attached by a common lanceolate stipe to an oblong viscidium about 0.5 × 0.4 mm; stigma concave.

[A-EM]
Distribution

Seidenfadeniella is a genus of only two species—S. rosea and S. filiformis (Rchb.f.) Christenson & Ormerod—from southern India and Sri Lanka.

Ecology

Both species are epiphytic in stunted evergreen tropical and subtropical moist broadleaf forests at 1000–2600 m.

General Description

Epiphytic herbs. Roots basal. Stem elongate, covered in sheathing leaf bases. Leaves terete, aciculate, articulate to sheathing base. Inflorescence axillary, pendent or spreading, racemose, multiflowered; bracts triangular, recurved. Flowers resupinate. Sepals free, subequal, spreading, narrowly elliptic, rounded at apex. Petals broadly obovate-subcircular, rounded at apex. Labellum attached to column base, trilobed, side lobes erect, rounded at tip, midlobe prominent, porrect-deflexed, ovate, callus keeled; spur inflated, with a thickened back wall and horizontal bridge. Column with two cleft pollinia, stipe linear, transparent; rostellum with two, two-pronged arms, the lower pointing downward and almost covering stigma, the upper pointing upward.

[A-EM]
Use

No uses have been reported for Cleisostomopsis; it is not known to be in cultivation.

[A-EM]
Use

No uses have been reported for Seidenfadeniella; it is virtually unknown in cultivation.

Native to:

Assam, China Southeast, East Himalaya, India, Sri Lanka, Thailand, Vietnam

Cleisostomopsis Seidenf. appears in other Kew resources:

First published in Opera Bot. 114: 370 (1992)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • 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.

Aeridinae: e-monocot.org
All Rights Reserved

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