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This species is accepted, and its native range is Kenya to NE. Tanzania.
A specimen from Kew's Herbarium

[FTEA]

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

Morphology General Habit
An erect epiphytic herb to 20 cm. tall.
Vegetative Multiplication Pseudobulbs
Pseudobulbs ovoid or conical, 1–3 cm. tall, 0.7–1 cm. diameter, clothed with white scarious cataphylls, 2–3-leaved at the apex.
Morphology Leaves
Leaves suberect, linear to oblanceolate, minutely apiculate, 6–11 cm. long, 0.9–1.2 cm. broad.
Morphology Reproductive morphology Inflorescences
Inflorescence erect, longer than the leaves, 7–13 cm. long, rather densely several-flowered towards the apex, densely pubescent; bracts ovate to lanceolate, acuminate, up to 9 mm. long.
Morphology Reproductive morphology Flowers
Flowers with red-purple sepals, a creamy lip yellow at the apex; callus yellow, spotted purple.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal ovate, acuminate, 9.5–11 mm. long, 4.8–5 mm. broad; lateral sepals ovate-triangular, acuminate, 10.5–12.5 mm. long, 6.7–8 mm. broad, forming a subconical mentum 5.5–6 mm. high.
Morphology Reproductive morphology Flowers Corolla
Petals oblanceolate, obtuse, 8–8.5 mm. long, 1.7–2.8 mm. broad.
Morphology Reproductive morphology Flowers Labellum
Lip reflexed near base, 3-lobed, sparsely clavate-pubescent, 7–8.5 mm. long, 5 mm. broad; side lobes somewhat obscure, subelliptic, running below the geniculation of the lip; mid-lobe ovate, subacute; callus absent or obscure.
Morphology Reproductive morphology Flowers Column
Column very short, 0.5 mm. long.
Habitat
Epiphytic in dry woodland and on introduced trees; 1100–1500 m.
Distribution
K4 K5 K6 T3 not known elsewhere

Native to:

Kenya, Tanzania

Polystachya holstii Kraenzl. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jun 17, 1976 Cribb, P.J. [10151], Tanzania K000390147
Stewart, J. [1348], Kenya 32929.000
Leakey, C. [63] 36074.000
Moreau [43], Tanzania K000390144
Greenway [3352], Tanzania K000390146
Luke, W.R.Q. [2981], Kenya K000390145

First published in Xenia Orchid. 3: 150 (1896)

Accepted by

  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Flora of Tropical East Africa

  • Kraenzl. in Xenia Orch. 3: 150, t. 287/1–4 (1896).
  • Stewart in A.D.Q. Agnew, Upland Kenya Wild Flowers p. 768 (1974).

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