1. Family: Acanthaceae Juss.
    1. Genus: Barleria L.
      1. Barleria obtusa Nees

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

    [FZ]

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

    Habit
    Perennial herb or subshrub 30–300 cm tall, often scrambling or scandent, sometimes a dwarf shrublet; stems with mixed ± dense short white retrorse or spreading hairs and few to numerous long coarse pale-buff spreading or ascending hairs; upper internodes sometimes also glandular-pubescent.
    Leaves
    Leaves ovate or elliptic, 2–8 × 1–3.5(4.5) cm, base and apex both shortly attenuate to rounded, surfaces with pale spreading to subappressed hairs, most numerous on margin and veins beneath where sometimes with a swollen base, sometimes with short glandular hairs along margin; lateral veins 3–5 pairs; petiole 5–17 mm long.
    Inflorescences
    Inflorescence axillary, flowers solitary or usually in a lax 2–7-flowered unilateral or partially dichasial cyme 3–11 cm long, on spreading and often looping peduncles; primary peduncle 8–45 mm long, indumentum as stem but glandular hairs often more numerous; bracteoles linear or narrowly oblanceolate, recurved, 2–16.5 × 0.5–1.8 mm, margin entire, apex acute; pedicels 0–3(12) mm long.
    Calyx
    Calyx green with conspicuous darker parallel primary venation giving a striate appearance; outer lobes subequal or posterior lobe somewhat longer, narrowly oblong-lanceolate to oblanceolate, 8–18 × 2–5 mm, base cuneate, margin entire or with minute teeth formed by swollen hair bases, apex often recurved, acute- to rounded-apiculate anterior lobe more rarely notched, surfaces with numerous pale-buff or greyish ascending to subappressed hairs and spreading glandular hairs, latter sometimes restricted to margin; lateral lobes pale, linear-lanceolate, 5.5–12 mm long.
    Corolla
    Corolla 26–44 mm long, pale blue to mauve, with paler tube and with purple stripes in throat, rarely white throughout, mixed glandular-pilose and retrorse eglandular-pubescent externally; tube 17–26 mm long, narrowly campanulate above attachment point of stamens; limb subregular; abaxial lobe 9.5–19 × 8–18 mm, offset by 2(5) mm; lateral lobes as abaxial but 7–15.5 mm wide; adaxial lobes 9–16.5 × 5.5–10.5 mm.
    Stamens
    Stamens attached 7.5–13 mm from base of corolla tube; filaments 16–25 mm long; anthers 3–4 mm long; lateral staminodes 2.2–4 mm long, pubescent, antherodes 0.6–0.9 mm long.
    Ovary
    Ovary glabrous or with few short ascending hairs towards apex; style glabrous; stigma linear, 0.8–1.8 mm long.
    Fruits
    Capsule 13–16.5 mm long, glabrous or largely so.
    Seeds
    Seeds 4–4.5 mm long and wide.
    Distribution
    Also in Swaziland and South Africa (North West, Gauteng, Limpopo, Mpumalanga, KwaZulu-Natal).
    Ecology
    Bushland on rocky hillslopes and sandy soils, margins of coastal or riverine forest, streamside thicket, roadsides; to 300 m.
    Conservation
    Conservation notes: In the Flora area only known from the Lebombo Mts, but widespread and locally common in South Africa and Swaziland, usually in areas of low agricultural potential; Least Concern.

    Images

    Distribution

    Native to:

    Free State, KwaZulu-Natal, Mozambique, Northern Provinces

    Barleria obtusa Nees appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dec 29, 1899 Harvey [930], South Africa K000394581
    Dec 29, 1899 Drege [s.n.], South Africa K000394579
    Dec 29, 1899 Drege [s.n.], South Africa K000394582
    11703.000
    Harvey [s.n.], South Africa K000394580

    First published in Linnaea 15: 358 (1841)

    Accepted by

    • Retief, E. & Meyer, N.L. (2017). Plants of the Free State inventory and identification guide Strelitzia 38: 1-1236. National Botanical Institute, Pretoria.
    • 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
    • —Bandeira et al., Fl. Nat. Sul Moçamb.: 160, 191 (2007).
    • —Fabian & Germishuizen, Wild Fl. Nthn. S. Afr.: 390, pl.187 (1997).
    • —Compton, Fl. Swaziland: 554 (1976).
    • —Verdoorn in Fl. Pl. Afr. 25: t.998 (1946).
    • —Obermeijer in Ann. Transv. Mus. 15: 169 (1933).
    • —Clarke in Fl. Cap. 5: 52 (1901).
    • —Anderson in J. Linn. Soc., Bot. 7: 31 (1863), excl. synonym B. barbata.
    • —Nees in De Candolle., Prodr. 11: 231 (1847), excl. var. b.
    • in Linnaea 15: 358 (1841).
    Kew Backbone Distributions
    • Retief, E. & Meyer, N.L. (2017). Plants of the Free State inventory and identification guide Strelitzia 38: 1-1236. National Botanical Institute, Pretoria.
    • 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