1. Family: Acanthaceae Juss.
    1. Genus: Barleria L.
      1. Barleria pretoriensis C.B.Clarke

        This species is accepted, and its native range is SE. Botswana to Northern Prov.

    [FZ]

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

    Habit
    Much-branched subshrub or perennial herb 30–80 cm tall, erect, straggling or decumbent; stems with many white stiffly appressed medifixed hairs 0.2–0.5 mm long; upper internodes often with short spreading glandular hairs.
    Leaves
    Leaves lanceolate or narrowly oblong, 2–5 × 0.3–1 cm, base rounded to cuneate, apex acute, apiculate, surfaces with sparse biramous (medifixed and/or anvil-shaped) hairs 0.4–0.8 mm long, often restricted to margin and midrib beneath; lateral veins 3–4 pairs; petiole 1–5 mm.
    Inflorescences
    Inflorescences single-flowered in upper axils and subterminal, often one flower per node, widely spaced, sessile or peduncle to 4 mm long; bracts foliaceous, reduced upwards, typically 10–18 × 1.5–3.5 mm at uppermost nodes; bracteoles linear-lanceolate, narrowly elliptic or narrowly spathulate, (3)5–12(24) × 0.4–2(6) mm, hairs as on leaves, usually with short spreading glandular hairs; pedicels 0–3 mm long.
    Calyx
    Outer calyx lobes subequal, narrowly lanceolate, anterior lobe 8–17.5 × 2.5–4 mm, apex notched for 0.7(2) mm, surface with dense white appressed, simple and biramous (often anvil-shaped) hairs and sparse to numerous spreading glandular hairs, prominently 2-veined; posterior lobe with apex acute, surface with 1 or 3 prominent veins; lateral lobes linear-lanceolate, 7.5–13.5 mm long.
    Corolla
    Corolla 38–60 mm long, white at first, turning pale mauve, pink or violet; pubescent mainly on lateral lobes externally, hairs mainly glandular; tube cylindrical, 13.5–25 mm long, barely expanded towards mouth; limb in 4+1 arrangement; abaxial lobe 19.5–27.5 × 9–12.5 mm, offset by 3.5–7.5 mm; lateral lobes 19–26 × 7–13 mm; adaxial lobes 20–30 × 5–9.5 mm.
    Stamens
    Stamens attached 7–9 mm from corolla base; filaments 21–33 mm long; anthers 3.2–4.5(5) mm long; lateral staminodes 0.8–2.5 mm long.
    Ovary
    Ovary with dense appressed buff-coloured hairs throughout; style glabrous; stigma 2–3 mm long.
    Fruits
    Capsule 13–18 mm long, appressed-hairy including some anvil-shaped hairs.
    Seeds
    Seeds c.5 × 4 mm.
    Distribution
    Also in northern South Africa (Limpopo, Mpumalanga, Gauteng, North West).
    Ecology
    Open rocky hillslopes, rock crevices or in sparse bushland and wooded grassland; 1000–1350 m.
    Conservation
    Conservation notes: Local but apparently common in N South Africa; Least Concern.

    Images

    Distribution

    Native to:

    Botswana, Northern Provinces

    Barleria pretoriensis C.B.Clarke appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1900 Rehmann, A. [4103], South Africa K000394528 holotype

    First published in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 5: 54

    Accepted by

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

    Literature

    Flora Zambesiaca
    • —Fabian & Germishuizen, Wild Fl. Nthn. S. Afr.: 390, pl.187 (1997).
    • —Killick in Flow. Pl. Afr. 41: t.1623 (1971).
    • —Obermeijer in Ann. Transv. Mus. 15: 149 (1933).
    • in Fl. Cap. 5: 54 (1901).
    Kew Backbone Distributions
    • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2015). Flora Zambesiaca 8(6): 1-314. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    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 2019. 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 2019. 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