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

[FTEA]

Acanthaceae (part 1), Kaj Vollesen, Flora of Tropical East Africa, 2008

Morphology General Habit
Stiffly erect perennial herb with 1(–2) stems from creeping or suberect woody rootstock; stems 0.7–1.3 m tall, wiry, glabrous to densely pubescent when young, glabrescent.
Morphology Leaves
Leaves: large pair 1.5–3 times longer than small pair; lamina linear-lanceolate to lanceolate, large pair 11–21 × 0.8–2.5 cm, with entire margin or with a single tooth near base, beneath glabrous or with a few curly hairs on midrib, above glabrous to uniformly sparsely crisped-puberulous, scabrid on margins and above.
Morphology Reproductive morphology Flowers
Heads on upper part of stem (rarely also lower down), dense and globose; peduncle 0.5–4 cm long, sparsely to densely sericeous-puberulous; axes densely sericeous-puberulous; floral leaves and outer bracts sericeous-puberulous (pubescent on margins), narrowly ovate-elliptic, 2–4 cm long, with distinct submarginal and transverse ladder-like veins, with up to 6 teeth per side; inner bracts similar, up to 1.5 cm long.
Morphology Reproductive morphology Flowers Calyx
Sepals uniformly puberulous (hairs slightly longer on veins), without or towards base with a few stalked capitate glands; dorsal ovate-elliptic, 27–28 mm long (terminal mucro ± 3 mm), tapering gradually or with a long slightly ligulate apical part, apex acute, on each side with 1–2 lateral teeth; ventral ovate-elliptic, 26–27 mm long, tapering gradually to apex, bifurcate with two ± 5 mm long teeth, on each side with one lateral tooth; lateral ± 24 mm long.
Morphology Reproductive morphology Flowers Corolla
Corolla pale mauve to purple with white tube, 30–35 mm long of which the tube 7–10 mm; limb obovate, 15–20 mm wide, distinctly 3-lobed, callus with three equally strong ribs; filaments 7–8 mm long, sparsely glandular towards base, appendage ± 3 mm long, triangular in outline, flattened towards the anther; anthers 5–7 mm long.
Morphology Reproductive morphology Fruits
Capsule ± 13 mm long.
Morphology Reproductive morphology Seeds
Seed ± 7 × 4.5 mm.
Ecology
Brachystegia woodland on grey loamy soil, large rocky outcrops with Brachystegia microphylla thicket on gravelly-stony soil; 1450–1600 m
Distribution
Flora districts: T4 Range: Not known elsewhere Range: Not known elsewhere Range: Tanzania.

Native to:

Tanzania

Blepharis petraea Vollesen appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Bidgood, S. [4737], Tanzania K000394312 holotype
Bidgood, S. [4737], Tanzania K000394313 isotype
Bidgood, S. [5776], Tanzania K000468649

First published in Kew Bull. 57: 454 (2002)

Accepted by

  • Govaerts, R. (2003). World Checklist of Seed Plants Database in ACCESS G: 1-40325.
  • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.

Literature

Flora of Tropical East Africa

  • K.B. 57: 454 (2002).

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