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  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.


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

    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 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.
    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.
    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 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 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 appressed-pubescent towards apex; style pubescent in proximal half or throughout; stigma 1–1.6 mm long.
    Capsule 16.5–19 mm long including beak 4.5–6 mm long, appressed- or ascending-pubescent in distal half.
    Seeds black, subellipsoid, 3.8–4.3 × 3–3.8 mm.
    Also in SW Tanzania.
    Miombo woodland on sandy soils and rocky hillslopes; 900–1750 m.
    Conservation notes: Very local species; assessed as Near Threatened by Darbyshire (2009).



    Native to:

    Tanzania, Zambia

    Other Data

    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.


    Flora Zambesiaca

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


    Flora Zambesiaca
    Flora Zambesiaca

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    Kew Names and Taxonomic Backbone
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    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.