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

        This species is accepted, and its native range is W. Tanzania to N. Zambia.

    [FZ]

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

    Habit
    Suffruticose perennial 50–100 cm tall, several erect branches from a woody rootstock; stems densely hairy with shorter, whitish or buff-coloured, spreading or retrorse hairs and longer, buff or yellow, ascending or spreading hairs.
    Leaves
    Leaves often in whorls of 3–4; ovate, narrowly elliptic or lanceolate, 6–10.5 × 1–3.5 cm, base cuneate to obtuse, apex acute or subattenuate, surfaces with coarse ascending hairs, most dense on margin and veins beneath, midrib with additional shorter spreading hairs; lateral veins 3–5 pairs; petiole 0–5 mm long.
    Inflorescences
    Inflorescence a terminal thyrse, (3)10–28 cm long, cymules congested towards apex, more widely spaced below, each with flowers solitary or paired; bracts foliaceous, reducing upwards, those in uppermost axils 14–23 mm long; bracteoles oblanceolate, narrowly obovate-elliptic or linear, 12–31 × 1.5–7 mm.
    Calyx
    Anterior calyx lobe oblong or obovate, 13–22.5 × 5–12 mm, base cuneate or acute, apex shallowly notched up to 3 mm, surface with numerous coarse ascending hairs particularly on veins and margins, hair bases ± swollen, with few interspersed short spreading hairs, venation parallel or narrowly palmate, prominent but sometimes obscured by indumentum; posterior lobe 16–24.5 mm long, apex acute to rounded; lateral lobes (ovate-)lanceolate, 6–14 mm long.
    Corolla
    Corolla 40–54 mm long, mauve or lilac with whitish tube; shortly glandular-pubescent externally; tube 18–24 mm long; lobes each 20–28.5 mm long, abaxial lobe 11.5–17.5 mm wide, lateral lobes to 12.5–19.5 mm, adaxial lobes to 9–15.5 mm.
    Stamens
    Stamens attached 6–8.5 mm from base of corolla tube; filaments 21–25 mm long, with numerous short-stalked glands in distal half, sparse below; anthers 5.5–7.5 mm long; lateral staminodes 1.5–3.7 mm long.
    Ovary
    Ovary appressed-pubescent towards apex; style pubescent in proximal half or throughout; stigma 1–1.6 mm long.
    Fruits
    Capsule 16.5–19 mm long including beak 4.5–6 mm long, appressed- or ascending-pubescent in distal half.
    Seeds
    Seeds black, subellipsoid, 3.8–4.3 × 3–3.8 mm.
    Distribution
    Also in SW Tanzania.
    Ecology
    Miombo woodland on sandy soils and rocky hillslopes; 900–1750 m.
    Conservation
    Conservation notes: Very local species; assessed as Near Threatened by Darbyshire (2009).

    Images

    Distribution

    Native to:

    Tanzania, Zambia

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

    Date Reference Identified As Barcode Type Status
    Jun 1, 2007 Bidgood, S. [2649], Tanzania K000799422 holotype
    Jun 1, 2007 Bidgood, S. [2649], Tanzania K000799423 isotype
    Bidgood, S. [5602], Tanzania K000468822

    First published in Kew Bull. 63: 608 (2008 publ. 2009)

    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.
    • Darbyshire, I. (2008 publ. 2009). A reassessment of the status of Barleria sect. Cavirostrata (Acanthaceae) in tropical Africa, with a new species, B. richardsiae described from the Tanzania-Zambia border region Kew Bulletin 63: 601-611. Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • —Darbyshire in F.T.E.A., Acanthaceae 2: 387, fig.53 (2010).
    • in Kew Bull. 63: 608, fig.2 (2009).

    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