Listrostachys Rchb.f.
  • Rchb.f., Bot. Zeitung (Berlin) 10: 930 (1852)


This is a synonym of Angraecinae Summerh.

General Description

Epiphytic herbs. Roots toward base. Stem leafy, covered by distichous leaf-bases. Leaves coriaceous, linear, unequally bilobed at tip. Inflorescence suberect, elongate, many-flowered; rachis with flowers arranged distichously in two rows with labellum and spur pointing outward; bracts sheathing rachis. Flowers resupinate, sparsely hairy, white sometimes with minute red spots toward base and with a red spur. Dorsal sepal erect to reflexed, spatulateobovate, apiculate; lateral sepals recurved, ovate, keeled on back. Petals obliquely triangular. Labellum oblong, ecallose, spurred at base; spur clavate. Column upcurved, distally dilated; anther semicircular, pollinia two, slightly cleft, each attached by a broadly spatulate stipe to a common, reniform viscidium; stigma subcircular.

Morphology

Schill and Pfeiffer (1977) described the pollen of L. pertusa as having laevigate sculpturing with a calymmate sexine.

Ecology

The species occurs in shady places on large branches of large evergreen trees such as Lophira alata Banks ex C.F.Gaertn. (Ochnaceae) and Coula edulis Baill. (Olacaceae) in humid forests from sea level to 200 m.

Distribution

Listrostachys is a monospecific genus in tropical Africa from Sierra Leone to Gabon and Zaire.

Uses

There are no known ethnobotanical uses of the species, and it is not in common cultivation.

Literature

in Bot. Zeit. 10: 930 (1852); F.T.A. 7: 150, partly.

Distribution Map

 
  • Native distribution
Found in
  • Africa West Tropical Africa Ghana
  • Ivory Coast
  • Liberia
  • Nigeria
  • Sierra Leone
  • West-Central Tropical Africa Cameroon
  • Congo
  • Equatorial Guinea
  • Gabon
  • Gulf of Guinea Is.
  • 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 Reichenbach, H.Gustav Original publication of Listrostachys. 10, (1852).

 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
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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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