1. Family: Acanthaceae Juss.
    1. Genus: Barleria L.
      1. Barleria saxatilis Oberm.

        This species is accepted, and its native range is S. Mozambique to S. Africa.

    [FZ]

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

    Habit
    Spiny compact shrublet to sprawling or subscandent perennial herb, 30–90 cm tall; stems sparsely strigose, with numerous fine white retrorse or spreading hairs evenly distributed or restricted to two opposite sides, nodes strigose.
    Leaves
    Leaves oblong, elliptic or somewhat ovate to obovate, 1.2–3(4.7) × 0.6–1.5(2) cm, base cuneate, attenuate or obtuse, apex acute to rounded with ± prominent mucro, surfaces strigose, hairs most numerous on margin and veins beneath; lateral veins 3–4(5) pairs; petiole to 5 mm.
    Inflorescences
    Inflorescence axillary, a contracted unilateral cyme 1–3.5 cm long, each (1)3–10-flowered; bracteoles green, linear-lanceolate or lanceolate, pairs unequal, the longer 6–17 × 1–3.5 mm excluding the (1)2–6 lateral spines to 1–5 mm, apex spinose, midrib pale and prominent, sterile pairs sometimes persisting at lower nodes.
    Calyx
    Calyx at first pale green or pinkish with dark green or purple venation, later turning pale brown-scarious; anterior lobe elliptic or ovate, 8–17(20) × 3.5–8 mm, base shortly attenuate or rarely obtuse, margin with 4–8 slender lateral spines 1.5–5 mm long ending in a short bristle, apex spinose, surface strigose along veins, often with short spreading glandular hairs on spines; posterior lobe ovate or lanceolate, 10–22 × 4.5–10.5 mm, marginal spines to 6 mm long, apex attenuate into a long spine; lateral lobes linear-lanceolate, 3.5–10 mm long.
    Corolla
    Corolla (chasmogamous flowers) 27–39 mm long, pale pink, lilac or (blue-)mauve, sometimes white-flowered plants within a population, eglandular-pubescent and glandular-pilose externally; tube 16.5–25 mm long, cylindrical, narrowly campanulate towards mouth; limb in weak 2+3 arrangement or subregular; abaxial lobe 11–14 × 5.5–7.5 mm; lateral lobes 10–13 × 4.5–8.5 mm; adaxial lobes 9–12.5 × 3–5 mm; cleistogamous flowers sometimes present, appearing as cylindrical buds.
    Stamens
    Stamens attached 10–11 mm from base of corolla tube; filaments 15–18 mm long; anthers (1.7)2–2.4 mm long; lateral staminodes 1.5–2.5 mm long, pubescent, antherodes c.0.7 mm long.
    Ovary
    Ovary with ring of few crisped white hairs at apex; style glabrous; stigma linear, 0.35–0.7 mm long.
    Fruits
    Capsule 10–13.5 mm long, glabrous.
    Seeds
    Seeds 3.5–4.5 mm long and wide.
    Distribution
    Also in Swaziland and South Africa (KwaZulu-Natal, Limpopo, Mpumalanga).
    Ecology
    Dry rocky hills or sandy plains, dry bushland in full sun or shade, also riverine bushland, roadside slopes and cliff ledges; c.100 m.
    Conservation
    Conservation notes: Known only from a single collection in the Flora area, but locally abundant in N South Africa where it can be the dominant undershrub in open bushland – Meeuse 10203 states it is "very frequent and aspect-forming for miles"; Least Concern.

    Images

    Distribution

    Native to:

    KwaZulu-Natal, Mozambique, Northern Provinces, Swaziland

    Barleria saxatilis Oberm. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1992 Meeuse, A.D.J. [10203], South Africa K000794966 isotype

    First published in Bothalia 7: 445 (1961)

    Accepted by

    • 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

    Flora Zambesiaca
    • —Makholela et al. in S. Afr. J. Bot. 70: 515 (2004).
    • —Pooley, Field Guide Wild Fl. KwaZulu-Natal: 490 (1998).
    • —Fabian & Germishuizen
    • —Compton, Fl. Swaziland: 554 (1976).
    • in Bothalia 7: 445 (1961).
    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