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

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

    [FZ]

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

    Habit
    Spiny shrub or perennial herb 45–250 cm tall; stems buff- or yellowish-strigose with interspersed shorter spreading hairs when young.
    Leaves
    Leaves subsessile, rather fleshy, (oblong-)elliptic, obovate or suborbicular, 0.7–4.5 × 0.4–1.6 cm, base cuneate or subattenuate to obtuse, margin revolute when young, apex obtuse, rounded or rarely acute, with a short spine-tip or apiculum, upper surface with coarse subspreading to subappressed hairs, lower surface strigulose on veins with numerous spreading whitish hairs elsewhere, at least when young; lateral veins 3–6 pairs, prominent beneath.
    Inflorescences
    Inflorescence axillary and/or subterminal, 1–3-flowered, subsessile; bracteoles spinose, 5–18 × 0.5–2.5 mm, straight or curved, conduplicate or triangular in cross-section, margin entire, pairs sometimes persisting at lower nodes as paired axillary spines.
    Calyx
    Calyx often purplish towards apex and on veins when young, turning pale-scarious; outer lobes subequal, broadly ovate to elliptic or obovate, 10.5–23 × 5–16 mm, base rounded or cordate to cuneate or attenuate, margin denticulate to spinulose-dentate, rarely subentire, apex obtuse to attenuate in outline, ± spine-tipped, anterior lobe rarely emarginate, surfaces sparsely strigulose and with scattered minute stalked glands; lateral lobes lanceolate-attenuate, 3–8.5 mm long.
    Corolla
    Corolla (22.5)25–38.5 mm long, blue, mauve or white, glandular-pilose externally or largely glabrous; tube 15–23.5 mm long, funnel-shaped above attachment point of stamens; limb in 2+3 arrangement; abaxial and lateral lobes 9–18 × 8–16.5 mm; adaxial lobes 6–15 × 4–10 mm.
    Stamens
    Stamens attached 6–12 mm from base of corolla tube; filaments 12–24 mm long; anthers 3–5 mm long; lateral staminodes 0.7–3.7 mm long, with minute stalked glands and often pilose, antherodes to 1.4 mm or barely developed.
    Ovary
    Ovary glabrous; style with declinate straight hairs at base; stigma linear, 1–2 mm long.
    Fruits
    Capsule (11.5)14.5–17 mm long, glabrous.
    Seeds
    Only immature seeds seen.

    Images

    Distribution

    Native to:

    Angola, Malawi, Zambia, Zimbabwe

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

    Date Reference Identified As Barcode Type Status
    Feb 27, 1897 Baines, T. [s.n.], Zimbabwe K000394567 Unknown type material

    First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 5: 151 (1899)

    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.
    • Darbyshire, I., Vollesen, K. & Kelbessa, E. (2010). Flora of Tropical East Africa, Acanthaceae (Part 2): 287-756.

    Not accepted by

    • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne. [Cited as Barleria ramulosa.]

    Literature

    Flora Zambesiaca
    • —Darbyshire in F.T.E.A., Acanthaceae 2: 339 (2010).
    • —Tredgold & Biegel, Zimb. Wild Fl.: 52, pl.35 (1996).
    • —White, For. Fl. N. Rhod.: 381 (1962).
    • in F.T.A. 5: 151 (1899).
    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