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This genus is accepted, and its native range is Tropical & S. Africa.
A specimen from Kew's Herbarium

[FTEA]

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

Morphology General Habit
Shrubs or small trees.
Morphology Leaves
Leaves opposite, anisophyllous, apex usually drawn out into an obtuse tip, base usually attenuate and decurrent on petiole.
Morphology Reproductive morphology 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.
Morphology Reproductive morphology Flowers 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.
Morphology Reproductive morphology Flowers 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.
Morphology Reproductive morphology Flowers Androecium 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.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary glabrous, with broad annular disk at bas; style usually glabrous, bent near tip; stigma with two subequal acute lobes.
Morphology Reproductive morphology Fruits
Capsule 4-seeded, woody, sessile, ellipsoid, usually glabrous; valves with distinct dorsal furrow.
Morphology Reproductive morphology 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.

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

Sclerochiton Harv. appears in other Kew resources:

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

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Flora of West Tropical Africa

  • —F.T.A. 5: 109.

Flora of Tropical East Africa

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

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 2021. 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 2021. 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