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This species is accepted, and its native range is S. Malawi.
A specimen from Kew's Herbarium

[FZ]

Orchidaceae, I. la Croix & P.J. Cribb. Flora Zambesiaca 11:2. 1998

Morphology General Habit
Dwarf epiphytic herb, forming dense clumps, flowering when leafless or when the new leaves are just starting to develop.
Vegetative Multiplication Pseudobulbs
Pseudobulbs 10–15 × 9–10 mm, ovoid or globose, slightly bilaterally flattened, 2–6-leaved.
Morphology Leaves
Leaves, 3–7 × 1–1.5 cm, lanceolate or ligulate, somewhat conduplicate, dark glossy green sometimes edged with purple, minutely 2-lobed at the apex.
Morphology Reproductive morphology Inflorescences
Inflorescence (floral axis) 2–10 cm tall, densely 2–12-flowered.
Morphology Reproductive morphology Flowers
Flowers pink tinged with green, the lip deep purple-pink, or flowers yellow-green with a white lip and purple-veined side lobes, drying brown.
Morphology Reproductive morphology Flowers Pedicel and Ovary
Pedicel and ovary 5–6 mm long, stout, pubescent.
Morphology Reproductive morphology Inflorescences Bracts
Bracts c. 5 × 6 mm, ovate, acuminate.
Morphology Reproductive morphology Flowers Calyx
Sepals fleshy, densely hairy on the outside; dorsal sepal 10–13 × 4–6.4 mm, ovate, acute; lateral sepals 9.5–14 × 6.4–8.5 mm, obliquely ovate, acute, keeled on the outside; mentum rounded, 5.3–6 mm tall.
Morphology Reproductive morphology Flowers Corolla
Petals 7.3–10.2 × 2.5 mm, oblanceolate.
Morphology Reproductive morphology Flowers Labellum
Lip hairy on the underside near the base, fleshy, much recurved and hard to flatten, 3-lobed at about the middle, with a small central callus; callus and disk with numerous slightly clavate hairs. Mid-lobe 3.7–5 × 3–4 mm, lanceolate or ovate, acute or acuminate, glabrous, very rugose; side lobes erect, ear-like.
Morphology Reproductive morphology Flowers Column
Column short and stout, c. 1.5 mm long.

Native to:

Malawi

Polystachya johnstonii Rolfe appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Oct 25, 2012 Patel, H. et al. [7356], Mozambique K000718697
Aug 15, 1983 La Croix [359], Malawi K000049487
Mar 23, 1982 Morris, B. [302], Malawi K000049492
Morris, B. [BM59], Malawi 23879.000
Morris, B. [BM52], Malawi 23918.000
Morris, B. [BM59], Malawi 23932.000
Morris, B. [B.M.81], Malawi 25476.000
Morris, B. [BM73], Malawi 26327.000
Morris, B. [52], Malawi 28214.000
Morris, B. [59], Malawi 28221.000
Malawi 3055.000
Rix, M., Malawi 41038.000
Owen, D., Malawi 42635.000
Johnston-Stewart, N. [33], Malawi 42967.000
la Croix, I. [31], Malawi 42984.000
Morris, B. [72 B/1], Malawi 44043.000
Morris, B. [59], Malawi 44045.000
la Croix, I., Malawi 46705.000
Pettersson, B. [291], Malawi 48784.000
la Croix, I., Malawi 50976.000
la Croix, I., Malawi 50992.000
Morris, Brian [81], Malawi K000049497
Morris, Brian [BM59], Malawi K000049490
La Croix, I.F. [718], Malawi K000049489
Clements, J.B. [90], Malawi K000049485
McClounie, J. [11], Malawi K000049495 Unknown type material
Johnston-Stewart, N.G.B. [167], Malawi K000049488
Clements, J.B. [96a], Malawi K000049486
Chapman, J.D. [8244], Malawi K000049491
McClounie [34], Malawi K000049494
Morris, B. [73], Malawi K000049484
Morris, Brian [s.n.], Malawi K000049496
Owen [53], Malawi K000049493

First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 7: 124 (1897)

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.

Flora Zambesiaca
Flora Zambesiaca
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