Margelliantha P.J.Cribb
  • P.J.Cribb, Kew Bull. 34: 329 (1979)


This is a synonym of Angraecinae Summerh.

General Description

Epiphytic herbs. Stem covered in persistent leaf bases. Leaves distichous, coriaceous, falcate, linear or narrowly oblanceolate, unequally bilobed at apex, twisted at base to lie in one plane, articulated at base to a persistent sheathing leaf base. Inflorescence spreading, racemose, few-flowered, axillary, emerging through leaf bases; peduncle and rachis terete, wiry. Flowers campanulate, white to yellow or pale green. Sepals and petals free; dorsal sepal concave, lateral sepals falcate, concave. Petals elliptic or subcircular. Labellum concave, entire, lacking a callus, spurred at base; spur clavate to globose. Column sometimes with an obscure foot; pollinia two, globose, stipites two, linear, viscidia two, circular or elliptic; stigma concave, with a raised posterior margin; rostellum trilobed, midlobe longer than lateral lobes.

Small monopodial, epiphytic herbs with short stems covered in persistent leaf-bases. Leaves distichous, coriaceous, ± falcate, linear or narrowly oblanceolate, unequally bilobed at the apex, twisted at the base to lie in one plane, articulated at the base to a persistent sheathing leaf-base. Inflorescences spreading, racemose, few-flowered, axillary, emerging through the leaf-bases; peduncle and rhachis slender, terete, wiry. Flowers campanulate, white to yellow or pale green. Sepals and petals free; dorsal sepal concave; lateral sepals falcate, concave. Petals elliptic or subcircular. Lip concave, entire, lacking a callus, spurred at the base; spur clavate to globose, with a narrow mouth. Column short, fleshy, sometimes with an obscure short foot; stigma concave, with a raised posterior margin; rostellum 3-lobed, thin-textured, mid-lobe longer than the lateral lobes; pollinia 2, globose; stipites 2, linear; viscidia 2, circular or elliptic.

Morphology

There is no published information on the pollen of these species.

Ecology

Species are epiphytic on branches and twigs mostly in forests from 200 to 2000 m, but M. millarii is found in coastal forests.

Distribution

Margelliantha is a genus of seven species in tropical and southern Africa. Three species have been recorded from tropical East Africa.

Uses

No ethnobotanical uses for the species have been recorded, and they are not in common cultivation.

Literature

in K.B. 34: 329 (1979)

Distribution Map

 
  • Native distribution
Found in
  • Africa East Tropical Africa Kenya
  • Tanzania
  • Southern Africa Cape Provinces
  • KwaZulu-Natal
  • Northern Provinces
  • West-Central Tropical Africa Rwanda
  • Zaire

  Bibliography

  • 1 Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 2 Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. Genera Orchidacearum: Volume 6. Epidendroideae (Part Three). (Oxford University Press: 2014).
  • 3 Cribb, P.James Original publication of Margelliantha. 34, (1979).

 Information From

Flora of Tropical East Africa
http://apps.kew.org/efloras/
Flora of Tropical East Africa. Published on the Internet; http://apps.kew.org/efloras/
WCS higher taxonomy
  • B All Rights Reserved
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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