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

[FZ]

Flora Zambesiaca Acanthaceae (part 2) by Iain Darbyshire, Kaj Vollesen and Ensermu Kelbessa

Morphology General Habit
Perennial herb or subshrub, 50–200 cm tall, sometimes scrambling; stems sparsely to densely buff- or yellow-strigose, hair bases swollen with age and persisting on mature woody stems.
Morphology Leaves
Leaves elliptic, 6.5–15.5 × 2–5.5 cm, base long-attenuate or -cuneate, apex attenuate or acuminate, surfaces strigose, hairs most numerous on margin and veins beneath; lateral veins 5–6 pairs; petiole 0–6 mm long.
Morphology Reproductive morphology Inflorescences
Inflorescence axillary, contracted (1)2–8-flowered unilateral cymes to 2 cm long; bracteoles pale green or tinged purple, pairs unequal and offset, the larger ovate or elliptic, often asymmetric, 12–22 × (3)6–12 mm, the smaller proportionally narrower, more strongly asymmetric and declinate, each with denticulate margin, teeth narrow and an apical bristle.
Morphology Reproductive morphology Flowers Calyx
Calyx green, usually paler towards base and centre, with darker reticulate venation; anterior lobe ovate or elliptic, 12–20 × 7–13 mm, base obtuse or rounded, margin as bracteoles or subentire, apex emarginate or truncate, surface strigose; posterior lobe broadly ovate, 17–30 × 10–19 mm, base rounded, apex acute or subattenuate; lateral lobes lanceolate, 3.5–6 mm long.
Morphology Reproductive morphology Flowers Corolla
Corolla 30–43 mm long, white, pale-blue or pale-purple, pubescent externally with mixed eglandular and glandular hairs; tube 19–23 mm long, funnel-shaped above attachment point of stamens; limb in 4+1 arrangement; abaxial lobe 12–22 × 8–18 mm, offset by 3–5 mm; lateral and adaxial lobes 9–18 × 6–13 mm.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens attached 7–10 mm from corolla tube base; filaments 18–29 mm long; anthers 2.5–3.2 mm long; lateral staminodes 1–3 mm long, pubescent, antherodes 0.5–0.9 mm long.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary glabrous; stigma linear, 1–2 mm long.
Morphology Reproductive morphology Fruits
Capsule 13.5–15 mm long, glabrous.
Morphology Reproductive morphology Seeds
Seeds 5.5–6 mm long and wide.
Distribution
Also in Tanzania.
Ecology
Mixed evergreen or semi-evergreen forest and degraded Albizia forest; in Tanzania also in lowland and riverine forest and thicket; 900–1300 m.
Conservation
Conservation notes: Rare in the Flora area but more frequent in lowlands of Tanzania; assessed as Near Threatened in F.T.E.A.

Native to:

Angola, Malawi, Tanzania, Zambia, Zimbabwe

Barleria holstii Lindau appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Mar 20, 1897 Holst, C. [3516], Tanzania K000394435 Unknown type material

First published in Bot. Jahrb. Syst. 20: 19 (1894)

Accepted by

  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2010). Flora of Tropical East Africa, Acanthaceae (Part 2): 287-756.
  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Flora Zambesiaca 8(6): 1-314. Royal Botanic Gardens, Kew.
  • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.

Literature

Flora Zambesiaca

  • in Bot. Jahrb. Syst. 20: 19 (1894).
  • —Clarke in F.T.A. 5: 166 (1899).
  • —Darbyshire in F.T.E.A., Acanthaceae 2: 332 (2010).

Kew Backbone Distributions

  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Flora Zambesiaca 8(6): 1-314. Royal Botanic Gardens, Kew.
  • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.

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