Plectrelminthus Raf.
  • Raf., Fl. Tellur. 4: 42 (1838)


This is a synonym of Angraecinae Summerh.

General Description

Erect or spreading epiphytic herbs. Stem leafy. Leaves distichous, coriaceous, spreading-arcuate, linear, unequally bilobed at tip, imbricate and sheathing at base. Inflorescence longer than leaves, spreading, several-flowered. Flowers non-resupinate, pedicel twisted proximally. Sepals and petals subsimilar, spreading, lineartapering. Labellum erect, narrowly clawed at base with thickened margins or auricles; lamina oblong-pandurate, trilobed at apex, long-apiculate; spur cylindrical, spiral apically, 15–25 cm long, pendent. Column fleshy toward base, dilated at apex; anther obovoid, pollinia two, porate, attached by a oblanceolate stipe (tegula) to an elliptic viscidium with a notched tip; stigma kidney- shaped; rostellum tapering to a shallowly notched tip.

Morphology

Pollen of Plectrelminthus has not been studied.

Ecology

The species is epiphytic in light shade on trunks and large branches of forest trees in damp lowland evergreen forests, open forests, and solitary trees in grassland, also on granite rocks in grassland in areas of high rainfall, occurring from sea level to 1000 m. Pollination There is no information on the pollination biology of this species, but given its nocturnal scent it is probably sphingophilous.

Distribution

Plectrelminthus is a monospecific genus of West and Central Africa, from Guinea and Sierra Leone to Zaire and Central African Republic.

Uses

There are no known ethnobotanical uses for the species, but it is occasionally cultivated in specialist collections.

Literature

Fl. Tellur. 4: 42 (1836).

Distribution Map

 
  • Native distribution
Found in
  • Africa West Tropical Africa Benin
  • Ghana
  • Guinea
  • Ivory Coast
  • Liberia
  • Nigeria
  • Sierra Leone
  • Togo
  • West-Central Tropical Africa Cameroon
  • Central African Republic
  • Congo
  • Gabon
  • 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 V.s. Summerhayes (1968) Orchidaceae. Flora of West Tropical Africa 3 (1)
  • 3 Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. Genera Orchidacearum: Volume 6. Epidendroideae (Part Three). (Oxford University Press: 2014).
  • 4 Rafinesque, C.S. Original publication of Plectrelminthus. 4, (1838).

 Information From

Flora of West Tropical Africa
http://apps.kew.org/efloras/
Flora of West Tropical 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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