1. Family: Acanthaceae Juss.
    1. Genus: Barleria L.
      1. Barleria vollesenii I.Darbysh.

        This species is accepted, and its native range is SE. Tanzania to N. Mozambique.

    [FZ]

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

    Habit
    Suffruticose herb, 20–60 cm tall, several ascending or erect unbranched stems from a woody rootstock; stems with long pale coarse hairs, spreading and subappressed, the latter ± concentrated in two opposite lines.
    Leaves
    Leaves oblong-elliptic or somewhat lanceolate, 7–11 × 1.8–2.8 cm, base cuneate, apex acute or obtuse, apiculate, indumentum as stem, hairs most dense on margin and veins beneath; lateral veins 5–6 pairs; petiole 0–4 mm long.
    Inflorescences
    Inflorescences single-flowered, axillary but crowded towards stem apex; bracts foliaceous; bracteoles narrowly oblong-elliptic or somewhat obovate, 14–40 × 2–10 mm, indumentum as leaves; pedicels 1–3 mm long.
    Calyx
    Anterior calyx lobe broadly ovate, 25–35 × 11–15 mm, base rounded or shallowly cordate, apex bifid with deltate-apiculate lobes 1.5–4 mm long, indumentum as leaves, hairs rather dense on veins and margin, hair bases often swollen, venation palmate, ± prominent; posterior lobe 31–41 × 14–17 mm, apex acute-apiculate; lateral lobes linear-lanceolate, 14–15 mm long.
    Corolla
    Corolla 62–67 mm long, white, limb with inconspicuous short glandular and eglandular hairs externally; tube cylindrical, 26–29 mm long, somewhat expanded towards mouth; limb in 4+1 arrangement; abaxial lobe c.30 × 17 mm, offset by 10–11.5 mm; lateral lobes c.28 × 13.5 mm; adaxial lobes c.24 × 13 mm.
    Stamens
    Stamens attached c.9 mm from corolla base; filaments 27–31 mm long; anthers 5–5.5 mm long; lateral staminodes 2–3 mm long.
    Ovary
    Ovary glabrous; stigma curved, c.2.5 mm long.
    Fruits
    Capsule and seeds not seen.
    Distribution
    Also in SE Tanzania.
    Ecology
    Miombo woodland with rock outcrops; c.700 m.
    Conservation
    Conservation notes: Assessed as Data Deficient in F.T.E.A., but very likely to be globally threatened as only known from two localities.

    Images

    Distribution

    Native to:

    Mozambique, Tanzania

    Barleria vollesenii I.Darbysh. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Bidgood, S. [1988], Tanzania K000799433 holotype
    Bidgood, S. [1988], Tanzania K000799434 isotype

    First published in Fl. Trop. E. Africa, Acanth.(2): 397 (2010)

    Accepted by

    • 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.

    Literature

    Flora Zambesiaca
    • in F.T.E.A., Acanthaceae 2: 397 (2010).
    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