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This species is accepted, and its native range is SW. Botswana to Namibia.

[KBu]

Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1. Kew Bulletin 74: 5. https://doi.org/10.1007/s12225-018-9791-0

Morphology General Habit
Spiny shrublet, (5 –) 15 – 100 cm tall; stems subangular, white-puberulous throughout or mainly restricited to two opposite lines; young stems sparsely pale-strigose and sometimes also with few minute patent glandular hairs
Morphology Leaves
Leaves elliptic, narrowly oblong-elliptic, obovate or spathulate, 1.3 – 4.7 × 0.4 – 1.9 cm (l:w ratio 1.6 – 7:1), base cuneate or attenuate, margin entire, apex acute, obtuse or sometimes rounded, sharply mucronate, strigose particularly on the margin and veins beneath, young leaves often finely white-puberulous, sometimes with scattered minute glandular hairs; lateral veins 3 – 5 pairs; petiole to 9 mm long
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted 9 – 13.5 mm from base of corolla tube; filaments 13 – 27 mm long; anthers 1.6 – 2.6 (– 2.9) mm long; lateral staminodes 1.3 – 4 mm long, pubescent towards base, antherodes well developed, 0.7 – 1 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx at first bluish with darker venation, maturing green with or without reddish venation, before soon turning pale-scarious; anterior lobe broadly ovate, 11 – 17 × (5.5 –) 8 – 11.5 (– 16) mm, base ± abruptly narrowed and rounded or subcordate, margin entire or with minute bristle-tipped teeth, apex shortly attenuate to obtuse and with a short mucro, rarely notched, surface strigose along the veins, with short white hairs throughout or mainly towards the base and with or without minute patent glandular hairs; posterior lobe like anterior lobe but 14 – 20.5 mm long, apex with a more prominent mucro; lateral lobes lanceolate, 5 – 10.5 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla 25 – 42 mm long, lilac, pink, pale blue or more rarely white, eglandular-pubescent externally with or without interspersed glandular hairs on the lateral lobes; tube 15 – 25 mm long, cylindrical, barely widened or narrowly campanulate towards mouth; limb subregular; abaxial lobe ± broadly obovate, 9 – 15.5 × 5 – 13.5 mm, apex rounded or obtuse; lateral lobes (obovate-) elliptic or oblong-elliptic, 9.5 – 16.5 × 4 – 10 mm, apices acute, obtuse or rounded; adaxial lobes as laterals but 3 – 7.5 mm wide
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary with a ring of minute crisped white hairs at attachment point of style; style glabrous; stigma clavate, 0.5 – 0.8 mm long
Morphology Reproductive morphology Fruits
Capsule 4-seeded, 10 – 14 mm long, glabrous or with few hairs towards apex; seeds 3.5 – 4 × 3.4 – 3.7 mm.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, contracted unilateral (scorpioid) cymes 1 – 3 cm long, each 2 – 7-flowered; bracts foliaceous; bracteoles linear-lanceolate, pairs unequal in length, the longer 7 – 23.5 × 0.8 – 3 mm, usually with a narrow green blade and a prominent pale midrib, apex spinose, margin with 1 – 11 teeth or spines per side to 1 – 3.5 mm long or rarely subentire, sterile bracteoles sometimes present at lower nodes as paired axillary spines
Note
Barleria lanceolata is a rather variable species; two allopatric subspecies are here recognised for the first time, with a potential third subspecies being known from only a single locality.
Type
Namibia, “Gross-Namaland”, Gamochab, fl. 24 April 1885, Schinz 61 [coll., no. and date not recorded in protologue] (lectotype Z* [Z000029733], selected by Darbyshire 2015).

[FZ]

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

Morphology General Habit
Spiny shrublet 15–100 cm tall; stems with short white retrorse hairs restricted to or concentrated in two opposite lines or bands, young stems sparsely strigose, sometimes with scattered minute spreading glandular hairs.
Morphology Leaves
Leaves oblanceolate, spathulate or narrowly oblong-elliptic, 1.2–4 × 0.4–0.8 cm, base cuneate, apex acute to rounded, mucronate, strigose mainly on margin and veins beneath, young leaves often with short white retrorse hairs at least on midrib above; lateral veins 3–4 pairs; petiole to 5 mm.
Morphology Reproductive morphology Inflorescences
Inflorescence a contracted unilateral cyme 1–3 cm long in upper axils, each 2–7-flowered; bracteoles linear-lanceolate, pairs unequal in length, the longer 7–20 × 0.8–1.8 mm, usually with a narrow green blade and a prominent pale midrib, apex spinose, margin with 1–11 lateral teeth or spines to 1–3.5 mm long, sterile bracteoles sometimes present at lower nodes as paired axillary spines.
Morphology Reproductive morphology Flowers Calyx
Calyx at first bluish, maturing green with darker, often reddish venation, soon turning pale-scarious; anterior lobe broadly ovate, 13–17 × 8.5–11.5(16) mm, base abruptly narrowed and rounded or subcordate, margin entire or with minute bristle-tipped teeth, apex shortly attenuate to obtuse and with a short mucro, rarely notched, surface strigose along veins, with short white retrorse hairs mainly towards base, with or without minute patent glandular hairs; posterior lobe as anterior but 14–19 mm long, apex with a more prominent mucro; lateral lobes lanceolate, 5–9 mm long.
Morphology Reproductive morphology Flowers Corolla
Corolla 25–42 mm long, lilac, pink, pale blue or rarely white, eglandular-pubescent externally with interspersed glandular hairs on lateral lobes; tube 15–25 mm long, cylindrical, barely widened or narrowly campanulate towards mouth; limb subregular; abaxial lobe 9–15.5 × 5–13.5 mm; lateral lobes 9.5–16.5 × 4–10 mm; adaxial lobes as laterals but 3–7.5 mm wide.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens attached 9–13.5 mm from base of corolla tube; filaments 13–27 mm long; anthers 2–2.6(2.9) mm long; lateral staminodes 1.3–4 mm long, pubescent towards base, antherodes 0.7–1 mm long.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary with ring of minute crisped white hairs at apex; style glabrous; stigma clavate, 0.5–0.8 mm long.
Morphology Reproductive morphology Fruits
Capsule 10.5–12 mm long, glabrous or with few hairs towards apex.
Morphology Reproductive morphology Seeds
Seeds 3.5–4 × 3.4–3.7 mm.
Distribution
Also in Namibia.
Ecology
Thin clay over quartzite and rocky ground with wooded and shrubby grassland; in Namibia in open bushland and sparse grassland on sandy soils or rocky ground, usually in full sun; 1050 m.
Conservation
Conservation notes: Although known only from a single collection in the Flora area, it is fairly common and widespread in Namibia; Least Concern.

Native to:

Botswana, Namibia

Barleria lanceolata (Schinz) Oberm. appears in other Kew resources:

First published in Ann. Transvaal Mus. 15: 155 (1933)

Accepted by

  • Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019). A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1 Kew Bulletin 74(5): 1-85. Royal Botanic Gardens, Kew.
  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Flora Zambesiaca 8(6): 1-314. Royal Botanic Gardens, Kew.
  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.

Literature

Kew Bulletin

  • Clarke, C. B. (1901). Barleria. In: W. T. Thiselton-Dyer (ed.), Flora Capensis. Vol. 5 (Pt. 1): 44 – 55 . L. Reeve & Co., London.
  • Craven, P. (ed.) (1999). A checklist of Namibian plant species. South African Botanical Diversity Network Report No. 7, SABONET, Windhoek.
  • Darbyshire, I. (2015). Barleria. In: J. R. Timberlake & E. S. Martins (eds), Flora Zambesiaca. Vol. 8 (6): 37 – 122. Royal Botanic Gardens, Kew.
  • Darbyshire, I., Tripp, E. A. & Dexter, K. G. (2012). A new species and a revised record in Namibian Barleria (Acanthaceae). Kew Bull. 67: 759 – 766.
  • Dinter, K. (1918). Index der aus Deutsch-Südwestafrika bis zum jahre 1917 bekannt gewordenen pflanzenarten. II. Repert. Spec. Nov. Regni Veg. 15: 340 – 355.
  • Klaassen, E. & Kwembeya, E. (eds) (2013). A checklist of Namibian indigenous and naturalised plants. Occasional Contributions No. 5, National Botanical Research Institute, Windhoek.
  • Klopper, R. R., Chatelain, C., Bänninger, V., Habashi, C., Steyn, H. M., de Wet, B. C., Arnold, T. H., Gautier, L., Smith, G. E. & Spichiger, R. (2006). Checklist of the flowering plants of sub-Saharan Africa. An index of accepted names and synonyms. South African Botanical Diversity Network Report No. 42, SABONET, Pretoria.
  • Mannheimer, C. (2012). Wildflowers of the Central Highlands of Namibia. MacMillan Namibia, Windhoek.
  • Mendelsohn, J., Jarvis, A., Roberts, C. & Robertson, T. (2002). Atlas of Namibia. A portrait of the land and its people. Ministry of Environment & Tourism and David Philip, Cape Town.
  • Meyer, P. G. (1957). Beitrag zur Kenntnis der Acanthaceen Südwestafrikas. Mitt. Bot. Staatssamml. München 2: 368 – 385.
  • Meyer, P. G. (1968). 130. Acanthaceae. In H. Merxmüller (ed.), Prodromus einer Flora von Südwestafrika. J. Cramer, Germany.
  • Obermeyer, A. A. (1933). A revision of the South African species of Barleria. Ann. Transvaal Mus. 15: 123 – 180.
  • Schinz, H. (1890). Beiträge zur Kenntnis der Flora von Deutsch-Südwest Afrika und der angrenzenden Gebiete. IV. Verh. Bot. Vereins Prov. Brandenburg 31: 177 – 230.
  • Welman, W. G. (2003). Acanthaceae. In: G. Germishuizen & N. L. Meyer (eds), Plants of southern Africa: an annotated checklist. Strelitzia 14: 92 – 106. National Botanical Institute, Pretoria.

Flora Zambesiaca

  • in Ann. Transv. Mus. 15: 155 (1933).
  • —Meyer in Merxmüller, Prodr. Fl. SW Afr. 130: 14 (1968).

Kew Backbone Distributions

  • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Flora Zambesiaca 8(6): 1-314. Royal Botanic Gardens, Kew.

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/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 Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/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