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This species is accepted, and its native range is S. Tropical & S. Africa.
Barleria mackenii Hook. f.

[FZ]

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

Morphology General Habit
Subshrub or suffrutex 20–120 cm long, branches erect, straggling or trailing; stems with upper internodes strigulose, lower portion densely (rarely sparsely) and minutely white-velutinous.
Morphology Leaves
Leaf buds white-strigulose and often white-velutinous. Leaves ovate to narrowly so or elliptic, 3–12 × 1.2–4.2 cm, base attenuate, apex attenuate or acute, rarely obtuse, apiculate, margin and veins beneath strigulose, upper surface often sparsely strigose, later glabrescent; lateral veins 4–6 pairs; petiole 0–12 mm long.
Morphology Reproductive morphology Inflorescences
Inflorescence axillary in upper portion of branches, 1–3-flowered; peduncle 1–8 mm long; bracts foliaceous; bracteoles ± ascending, those at distal axils linear to narrowly oblanceolate, 7–20 × 0.5–2.5 mm, those at proximal fertile axils often larger, narrowly elliptic or oblanceolate, 20–37 × 2.5–9.5 mm, margin and midrib strigose; pedicels 1.5–5 mm long.
Morphology Reproductive morphology Flowers Calyx
Calyx accrescent; anterior lobe broadly ovate, 13.5–23 × 11–21 mm in flower, 20–32 × 18–25 mm in fruit, base (sub)cordate, apex notched to 4 mm or acute to obtuse, external surface strigose on main veins and margin, internal surface puberulous with mixed eglandular and glandular hairs, venation palmate, prominent; posterior lobe as anterior, 15.5–26 mm long in flower, 23–35 mm long in fruit, apex acute or obtuse, margin often somewhat involute; lateral lobes linear-lanceolate, 7.5–11.5 mm long in flower, 11–14.5 mm in fruit, eglandular- and glandular-pubescent.
Morphology Reproductive morphology Flowers Corolla
Corolla 31.5–51.5 mm long, blue, mauve or violet with a darker throat, rarely white throughout, upper tube and limb pubescent externally; tube 14.5–24 mm long, basal 3.5–6 mm cylindrical, 4–6 mm wide, then abruptly funnel-shaped to 8–12.5 mm wide in throat; limb subregular or in weak 4+1 arrangement, all lobes usually strongly imbricate even at anthesis; abaxial lobe 13.5–21 × 12–18 mm, offset by 1.5–4.5 mm; lateral lobes as abaxial but 12.5–21.5 mm wide; adaxial lobes 9–15 mm wide.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens attached 4–6 mm from base of corolla; filaments 12.5–22.5 mm long; anthers 3–4.2 mm long; lateral staminodes 0.5–2.2 mm long.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary densely eglandular- and glandular-puberulous; style glabrous; stigma 2–3 mm long.
Morphology Reproductive morphology Fruits
Capsule 18.5–21.5 mm long, eglandular- and glandular-puberulous.
Morphology Reproductive morphology Seeds
Seeds 5.5–7.5 × 5–7 mm.
Distribution
Also in Angola, Namibia and South Africa (Limpopo, Mpumalanga).
Ecology
Various types of dry woodland (mopane, Acacia, Commiphora, Combretum), often on margins, dambo margins, secondary grassland and open bushland on rocky hillslopes; 800–1500 m.
Conservation
Conservation notes: A widespread species from a range of habitats, common in N Botswana; Least Concern.

Native to:

Angola, Botswana, Caprivi Strip, Namibia, Northern Provinces, Zambia, Zimbabwe

Barleria mackenii Hook.f. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1959 Gossweiler, J. [9717], Angola K000913674 isotype
Bidgood, S. [BO/10], Botswana K000823856
s.coll. [s.n.], South Africa K000951847 isolectotype
s.coll. [s.n.], South Africa K000951846 lectotype

First published in Bot. Mag. 96: t. 5866 (1870)

Accepted by

  • Darbyshire, I., Manzitto-Tripp, E.A. & Chase, F.M. (2021). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 2 Kew Bulletin 76: 127-190. Royal Botanic Gardens, Kew.
  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.

Not accepted by

  • Shendage, S.M. & Yadav, S.R. (2010). Revision of the genus Barleria (Acanthaceae) in India Rheedea 20: 81-130. [Cited as Barleria gibsonii.]

Literature

Flora Zambesiaca

  • in Bot. Mag. 96: t.5866 (1870).
  • in Merxmüller, Prodr. Fl. SW Afr. 130: 16 (1968).
  • —A. & R. Heath, Field Guide Pl. N. Botswana: 22 (2009).
  • —Clarke in F.T.A. 5: 160 (1899).
  • —Meyer in Mitt. Bot. Staatssamml. München 2: 382 (1957).
  • —Obermeijer in Ann. Transv. Mus. 15: 146 (1933).

Kew Backbone Distributions

  • Darbyshire, I., Manzitto-Tripp, E.A. & Chase, F.M. (2021). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 2 Kew Bulletin 76: 127-190. Royal Botanic Gardens, Kew.
  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Flora Zambesiaca 8(6): 1-314. Royal Botanic Gardens, Kew.

Art and Illustrations in Digifolia
Digital Image © Board of Trustees, RBG Kew

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

Plants and People Africa
Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
© Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/