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  1. Family: Acanthaceae Juss.
    1. Sclerochiton Harv.

      1. This genus is accepted, and its native range is Tropical & S. Africa.

    [FTEA]

    Acanthaceae (part 1), Kaj Vollesen, Flora of Tropical East Africa, 2008

    Habit
    Shrubs or small trees.
    Leaves
    Leaves opposite, anisophyllous, apex usually drawn out into an obtuse tip, base usually attenuate and decurrent on petiole.
    Flowers
    Flowers in usually terminal racemiform cymes or solitary, usually supported by bracts; rachis flattened; bracts glumaceous or the lower foliaceous, usually caducous, usually not imbricate; bracteoles 2, large, glumaceous, midrib often thickened and bony at base.
    Calyx
    Calyx large, divided to the base in 5 many-veined glumaceous sepals which are thickened and horny at base; ventral and lateral sepals subequal, 1-toothed, dorsal broader and usually longer, 1–5-toothed apically.
    Corolla
    Corolla tube wide, usually shorter than limb, glabrous, constricted at insertion of stamens, below insertion with band of downwardly directed hairs; limb split dorsally to give a single broad 5-lobed lower lip, below glabrous or hairy, above usually with central glabrous band flanked by two bands of stiff bulbous-based retrorsely directed hairs, these becoming shorter outwards; lobes oblong, broadly rounded.
    Stamens
    Stamens 4, inserted just inside tube on top of a broad thickened flange; filaments bony, flattened, subequal; anthers elliptic to oblong, exserted, 1-thecous, usually bearded, usually with a small thorn near base.
    Ovary
    Ovary glabrous, with broad annular disk at bas; style usually glabrous, bent near tip; stigma with two subequal acute lobes.
    Fruits
    Capsule 4-seeded, woody, sessile, ellipsoid, usually glabrous; valves with distinct dorsal furrow.
    Seeds
    Seed discoid, irregularly ovate-triangular in outline, with concentric ridges or rings of large pectinate scales.
    Distribution
    Range: 19 species in tropical and South Africa.
    Note
    In some species (e.g. S. bequaertii) one of the two leaves of a pair is constantly reduced to a small orbicular prophyll-looking leaf. In other species (e.g. S. vogelii subsp. holstii) this condition is seen in some specimens while in others there is only a slight difference. The leaves of all species of Sclerochiton are anisophyllous to a smaller or larger degree. In most species this latter condition is the norm.

    Images

    Distribution

    Native to:

    Angola, Cameroon, Cape Provinces, Congo, Gabon, Ghana, Guinea, Gulf of Guinea Is., Ivory Coast, Kenya, KwaZulu-Natal, Liberia, Malawi, Mozambique, Northern Provinces, Rwanda, Sierra Leone, Swaziland, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Accepted Species

    Synonyms

    Other Data

    Sclerochiton Harv. appears in other Kew resources:

    Bibliography

    First published in London J. Bot. 1: 27 (1842)

    Literature

    Flora of West Tropical Africa

    • —F.T.A. 5: 109.

    Flora of Tropical East Africa

    • K.B. 46: 7 (1991)
    • F.T.A. 5: 109 (1899)
    • E. & P. Pf. IV, 3b: 316 (1895)
    • G.P. 2: 1090 (1873)
    • DC., Prodr. 11: 279 (1847)
    • London Journ. Bot. 1: 27 (1842)

    Sources

    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 2020. 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 2020. 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