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This species is accepted, and its native range is W. Tropical Africa to Uganda and N. Tanzania.
A specimen from Kew's Herbarium

[FWTA]

Orchidaceae, V. S. Summerhayes. Flora of West Tropical Africa 3:1. 1968

Morphology Reproductive morphology Flowers
Flowers pale yellow.

[FTEA]

Orchidaceae, V. S. Summerhayes. Flora of Tropical East Africa. 1968

Morphology General Habit
An epiphytic herb, 5–21 cm. high.
Vegetative Multiplication Pseudobulbs
Pseudobulbs tightly clustered, from a short creeping rhizome, narrowly cylindric, 0.7–5.7 cm. long, 0.6–2.5 mm. broad, clothed in 3–4 membranous sheaths, ± articulated on basal half.
Morphology Leaves
Leaf more or less fleshy, subterete to flat, linear, cuneate below, retuse or obtuse at apex, 2–14.5 cm. long, 2–7 mm. broad, articulated 1–2 mm. above the pseudobulb apex.
Morphology Reproductive morphology Inflorescences
Inflorescence about as long as the leaf, a 2–6-branched secund raceme, 2.8–15.5 cm. long, up to 40-flowered; peduncle stout, 0.5–13.3 cm. long, bearing 1–4 short membranous sheaths, the lowermost 1–several mm. above the base; bracts triangular, amplexicaul, mostly apiculate, 0.4–2 mm. long.
Morphology Reproductive morphology Flowers
Flowers yellow to yellow- green; column, side lobes of lip and mentum tinged purple.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal elliptic to ovate- triangular, concave, shortly apiculate, 1.5–3.5 mm. long, 0.7–2.2 mm. broad; lateral sepals obliquely triangular, 2–4.5 mm. long, 2–6 mm. broad; mentum subcylindric, up to 5 mm. long.
Morphology Reproductive morphology Flowers Corolla
Petals narrowly oblong-lanceolate to linear, subacute, 1.7–3 mm. long, 0.6–1.6 mm. broad.
Morphology Reproductive morphology Flowers Labellum
Lip strongly recurved, distinctly clawed, distinctly 3-lobed in the apical third, 2.5–6.5 mm. long, 1.7–4 mm. broad; side lobes erect, oblong to ovate, rounded or obtuse; mid-lobe rounded-subquadrate, fleshy, 0.7–2.4 mm. long, 0.8–2 mm. broad; callus obscure, fleshy, at base of mid-lobe.
Morphology Reproductive morphology Flowers Column
Column subterete, 0.3–1 mm. long; foot 2.5 mm. long; pollinia ovoid.
Habitat
Rain-forest and woodland; 900–2300 m.
Distribution
K3 K5 K6 T2 U2 U4

[FWTA]

Orchidaceae, V. S. Summerhayes. Flora of West Tropical Africa 3:1. 1968

Morphology Reproductive morphology Flowers
Flowers yellow or greenish-yellow marked with purple or brown, or almost entirely purplish.

Native to:

Cameroon, Congo, Ghana, Ivory Coast, Kenya, Liberia, Tanzania, Uganda, Zaïre

Polystachya tenuissima Kraenzl. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
La Croix, I.F. [1153], Congo 59750.000
73204.000
Zenker [609], Cameroon K000242308
Chipp, T.F. [578], Ghana K000242309 Unknown type material
Cox, J.K. [43], Ghana Polystachya inconspicua 11331.000
Westwood, D. [53], Ghana Polystachya inconspicua 11332.000
Cansdale, G.S. [127], Ghana Polystachya inconspicua 17606.000
Polystachya inconspicua 17873.000
Uganda Polystachya inconspicua 23895.000
Cribb, P. [10869], Kenya Polystachya inconspicua 35756.000
Kenya Polystachya inconspicua 35764.000
Meyer [136], Uganda Polystachya inconspicua 37495.000
Meyer, H. [K47], Uganda Polystachya inconspicua 39061.000
Bytebier, B. [444], Kenya Polystachya inconspicua 58501.000
Eggeling, W.J., Uganda Polystachya inconspicua 6024.000
Archer, P.G., Kenya Polystachya inconspicua 6025.000
Fernie, L.N., Tanzania Polystachya inconspicua 6026.000
Piers, F. Polystachya inconspicua 6692.000
Tweedie, E.M. [448], Kenya Polystachya inconspicua 9128.000
Carroll, E.W., Kenya Polystachya inconspicua 9129.000
Copley, H. [27], Kenya Polystachya inconspicua 9130.000

First published in Bot. Jahrb. Syst. 19: 250 (1894)

Accepted by

  • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Mytnik-Ejsmont, J. (2011). A monograph of the subtribe Polystachyinae Schltr. (Orchidaceae): 1-400. Fundacja Rozwoju Uniwersytetu Gdanskiego.
  • Szlachetko, D.L. & Mytnik-Ejsmont, J. (2015). Orchidaceae of West-Central Africa 2: 1-300. Koeltz Scientific books, Koenigsheim, Germany.
  • Szlachetko, D.L. (2008). Orchidaceae of Ivory Coast Ruizia 20: 1-396.
  • Velayos, M. & al. (eds.) (2018). Flora de Guinea Ecuatorial 10: 1-491. Consejo superior de investigaciones científicas, Real jardín botánico, Madrid.

Literature

Flora of West Tropical Africa

  • F.T.A. 7: 110.
  • in Engl., Bot. Jahrb. 19: 250 (1894)

Kew Backbone Distributions

  • Jongkind, C. (2014). Fauna & Flora of Liberia, flowering plant species list www.liberianfaunaflora.org.
  • Szlachetko, D.L. & Mytnik-Ejsmont, J. (2015). Orchidaceae of West-Central Africa 2: 1-300. Koeltz Scientific books, Koenigsheim, Germany.
  • Szlachetko, D.L. (2008). Orchidaceae of Ivory Coast Ruizia 20: 1-396.

Flora of Tropical East Africa

  • Kraenzl. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 19: 250 (1894)
  • Kraenzl. in F. Fedde, Repertorium Speciorum Novarum Regni Vegetabilis, Beih. 39: 116 (1926).
  • Summerh. in Flora of West Tropical Africa, ed. 2, 3: 225 (1968).

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

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