1. Family: Rubiaceae Juss.
    1. Kraussia Harv.

      1. This genus is accepted, and its native range is Kenya to S. Africa, Socotra.

    [FTEA]

    Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

    Habit
    Shrubs; branches glabrous or less often pubescent
    Leaves
    Leaves opposite, petiolate; blades usually drying grey to mahogany-brown, obtuse to acuminate, chartaceous to subcoriaceous; domatia often present; stipules triangular to lanceolate, sometimes apiculate
    Flowers
    Flowers hermaphrodite, 5-merous; inflorescence axillary, pedunculate, usually lax with well-developed pedicels; bracts and bracteoles present
    Calyx
    Calyx glabrous to puberulous; tube ovate to turbinate; limb divided nearly to base into triangular lobes, rounded to acute, sometimes pubescent within
    Corolla
    Corolla-tube very shortly cylindrical at base, funnel-shaped or campanulate above, densely bearded at throat; lobes usually exceeding the tube in length, oblong-lanceolate or narrowly obovate
    Stamens
    Stamens attached at the mouth of the tube, exserted and spreading; filaments short; anthers dorsifixed near the base, linear, with connective distinctly apiculate
    Disc
    Disc annular
    Pistil
    Ovary 2-locular; placentas attached near the top of the septum, large or moderately small, with 1–3 impressed ovules; style short, fleshy, swollen and usually spindle-shaped, glabrous; stigmatic club long, exserted, fusiform, with 10 membranous ciliate wings
    Fruits
    Fruit globose, somewhat fleshy, 2-locular, containing numerous succulent red granules; calyx-limb persistent
    Seeds
    Seeds 2–6 per fruit, ± ovoid, usually with one flattened face, finely reticulate; hilar cavity or groove not present; endosperm entire.
    [FZ]

    Rubiaceae, D.M.Bridson & B.Verdcourt. Flora Zambesiaca 5:3. 2003

    Habit
    Shrubs; branches glabrous or less often pubescent.
    Leaves
    Leaves opposite, petiolate; blades usually drying grey to mahogany-brown, obtuse to acuminate, papery to subcoriaceous; domatia often present; stipules triangular to lanceolate, ridged, sometimes apiculate.
    Flowers
    Flowers hermaphrodite, (4)5-merous, in axillary pedunculate inflorescences, usually laxly arranged with well developed pedicels (or rarely pedicels absent); bracts and bracteoles present.
    Calyx
    Calyx glabrous to puberulous; tube ovoid to turbinate; limb-tube very reduced (or rarely not); lobes well developed, sometimes pubescent within.
    Corolla
    Corolla tube very shortly cylindrical at the base, funnel-shaped or campanulate above, densely bearded at the throat; lobes usually exceeding the tube in length, oblong-lanceolate or narrowly obovate.
    Stamens
    Stamens attached at the mouth of the tube, exserted and spreading; filaments short; anthers dorsifixed near the base, linear, with connective distinctly apiculate.
    Gynoecium
    Style short, fleshy, swollen and usually spindle-shaped, glabrous; pollen presenter long, exserted, fusiform, divided into 2 arms but these are usually held together save at the tip when mature, pubescent, with or less often without 10 membranous ciliate wings (not in the Flora area).
    Disc
    Disk annular.
    Ovary
    Ovary 2-locular; placentas attached near the top of the septum, large or moderately small with 1–3 impressed ovules.
    Fruits
    Fruit globose, somewhat fleshy, containing numerous red granules; calyx limb persistent.
    Seeds
    Seeds 2–6 per fruit, ± ovoid or hemispherical, usually with one flattened face, finely reticulate; hilar cavity or groove not present; endosperm entire.

    Images

    Distribution

    Native to:

    Kenya, KwaZulu-Natal, Mozambique, Northern Provinces, Socotra, Swaziland, Tanzania

    Kraussia Harv. appears in other Kew resources:

    First published in London J. Bot. 1: 21 (1842)

    Accepted by

    • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • Bullock in Bull. Misc. Inform., Kew 1934: 231 (1934).
    • Bullock in Bull. Misc. Inform., Kew 1931: 255 (1931)
    • J.D. Hooker in Bentham & J.D. Hooker, Gen. Pl. 2: 95 (1873) pro parte.
    • Sonder in Harvey & Sonder, F.C. 3: 22 (1864–5) pro parte.
    • in W.J. Hooker, London J. Bot. 1: 21 (1842).
    Flora of Tropical East Africa
    • Bullock in K.B. 1934: 231 (1934)
    • Bullock in K.B. 1931: 255 (1931)
    • G.P. 2: 95 (1873), pro parte
    • Sond. in Fl. Cap. 3: 22 (1864–65), pro parte
    • in Hook., Lond. Journ. Bot. 1: 21 (1842)

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/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