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This species is accepted, and its native range is E. Central DR Congo to SW. Uganda.
A specimen from Kew's Herbarium

[FTEA]

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

Morphology General Habit
A glabrous epiphytic herb, 12–16 cm. high.
Vegetative Multiplication Pseudobulbs
Pseudobulbs distantly placed on an elongated rhizome, conical, 2.6–4.5 cm. long, 4–5 mm. in diameter, ± ridged, shiny, clothed in 3–4 membranous basal sheaths.
Morphology Leaves
Leaf linear, acute to obtuse, cuneate below, 9.5–11.3 cm. long, 6–9.5 mm. broad, coriaceous, articulated 4–5 mm. above the pseudobulb apex.
Morphology Reproductive morphology Inflorescences
Inflorescence shorter than the leaf, simply racemose, 4–5 cm. long, up to 5 flowers borne successively; peduncle slender, 2.6–3.5 cm. long, with a membranaceous basal sheath; bracts triangular, amplexicaul, 1.5–2 mm. long.
Morphology Reproductive morphology Flowers
Flowers white; callus ochre-yellow; anther-cap purple.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal ovate-lanceolate, acuminate, 7.5–11.5 mm. long, 2.5–3.2 cm. broad; lateral sepals narrowly triangular, oblique, acuminate, 8–14 mm. long, 5–7 mm. broad; mentum broadly conical, to 5–6 mm. high.
Morphology Reproductive morphology Flowers Corolla
Petals spreading, linear-lanceolate, acute, 6.5–8 mm. long, 1–2 mm. broad.
Morphology Reproductive morphology Flowers Labellum
Lip strongly recurved in the middle, sessile, distinctly 3-lobed in the middle, 10–12.5 mm. long, 4–6 mm. broad; side lobes ovate or elliptic, porrect; mid-lobe ovate-lanceolate, acuminate, 5–7 mm. long, 1.4–3 mm. broad; callus central, fleshy.
Morphology Reproductive morphology Flowers Column
Column subterete, 1–1.5 mm. long; foot 4–5.5 mm. long; pollinia ovoid.
Habitat
Rain-forest: 1350–1600 m.
Distribution
U2

Native to:

Burundi, Rwanda, Uganda, Zaïre

Polystachya fallax Kraenzl. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1926 Dawe, M.T. [539], Uganda K000242336
Burgess, J.A., Uganda 11302.000
Owen, J.E., Uganda 17595.000
Tanzania 31699.000
Meyer, H. [K77], Uganda 38996.000
Meyer, H. [305], Uganda 39066.000
Troupin, M. [K 16], Rwanda 41354.000
Bridson, D. [492], Rwanda 41485.000
Bridson, D., Rwanda 41916.000
Uganda 5752.000
Kenya 9119.000
Uganda 62212.000
Chase [17922] 72116.000

First published in Bull. Misc. Inform. Kew 1926: 292 (1926)

Accepted by

  • 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.

Literature

Kew Backbone Distributions

  • Szlachetko, D.L. & Mytnik-Ejsmont, J. (2015). Orchidaceae of West-Central Africa 2: 1-300. Koeltz Scientific books, Koenigsheim, Germany.

Flora of Tropical East Africa

  • Kraenzl. in Bulletin of Miscellaneous Information, Kew 1926: 292 (1926).
  • Piers, Orch. E. Afr., ed. 2: 124 (1968).
  • Robyns & Tournay, Flore des Spermatophytes du Parc National Albert. 3: 478 (1955).

Flora of Tropical East Africa
Flora of Tropical East 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