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

[FTEA]

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

Morphology General Habit
Shrubs or sometimes small trees (outside Flora area one suffrutescent species)
Morphology Leaves
Leaves mostly (and in Flora area always) provided with domatia as small tufts of hairs without apparent excavation; bacterial nodules often present on the underside of the leaf-blade, situated either along the midrib and down the petiole or (not in East Africa) scattered; stipules sheathing, overtopped by 2 awns, with silky hairs and colleters inside
Morphology Reproductive morphology Inflorescences
Inflorescences axillary and opposite, with 1 or sometimes more flowers
Morphology Reproductive morphology Flowers
Flowers (5–)7–8(9)-merous, subtended by 2–4 bracteolar cups, each with 2 unequal pairs of awns
Morphology Reproductive morphology Flowers Calyx
Calyx ellipsoid in bud, either open (not in East Africa), or closed, with the tip obtuse to apiculate, completely covering the young corolla, deeply splitting between some lobes when the flower opens
Morphology Reproductive morphology Flowers Corolla
Corolla white, salver-shaped, usually (in East Africa always) with silky indumentum outside; lobes spreading, contorted to the left
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted at the throat, with basifixed anthers and with the connective broadly flattened
Morphology Reproductive morphology Flowers Disc
Disc annular
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2-locular, each chamber having 1 pendulous placenta attached to the septum; placenta with (1–)2 ovules; style 2-lobed, hairy or glabrous, exserted
Morphology Reproductive morphology Fruits
Fruit mostly orange, sometimes red, nearly spherical, at first crowned by the persistent calyx which often withers as the fruit ripens, bilocular; endocarp papery, shiny inside
Morphology Reproductive morphology Seeds
Seeds either 1 per chamber and hemispherical or 2 per chamber and shaped like a quarter of a sphere; seed-coat brown and striate; hilar scar apical-adaxial, forming a ± elliptic plane, with a diameter of at least half the seed height; endosperm horny, entire; embryo straight, attaining half the diameter of the seed; cotyledons subcircular, placed in the centre of the seed, equalling the laterally oriented radicle.

[FZ]

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

Morphology General Habit
Shrubs, small trees or sometimes suffrutescent plants.
Morphology Leaves
Leaves often deciduous and dimorphic (blades at start of new season’s growth smaller and broader than those on the mature stem, TAB. 92/A), petiolate; domatia mostly present in the nerve axils as small tufts of hairs without an apparent excavation*; bacterial nodules often present on the underside of the leaf blade, situated either along the midrib and down the petiole (or outside the Flora Zambesiaca area, scattered); stipules sheathing at least when young, each limb with silky hairs and colleters inside and topped by an awn.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary (very rarely apparently terminal on short shoots), 1-flowered or sometimes more; bract and bracteoles similar, cupular, arranged in a series of 2–4, progressively larger towards the top, each cupule with a pair of short and a pair of longer awns (TAB. 92/B6).
Morphology Reproductive morphology Flowers
Flowers (5)7–8(9)-merous.
Morphology Reproductive morphology Flowers Calyx
Calyx limb ellipsoid in bud, closed (outside the Flora Zambesiaca area, open) and completely covering the young corolla, with the tip obtuse to apiculate, splitting into two or more lobes at anthesis.
Morphology Reproductive morphology Flowers Corolla
Corolla white, salver-shaped, usually (always in the Flora Zambesiaca area) with silky indumentum outside; lobes contorted to the left in bud, spreading when mature.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted at the throat; anthers basifixed, erect, with the connective broadly flattened.
Morphology Reproductive morphology Flowers Disc
Disk annular.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2-locular, each locule with 1 pendulous placenta attached to the septum; placenta with (1)2 impressed or pendulous ovules; style slender, hairy or glabrous; pollen presenter 2-lobed, just included or shortly exserted.
Morphology Reproductive morphology Fruits
Fruit mostly orange, sometimes red, nearly spherical, at first crowned by the persistent calyx limb, but this often withers as the fruit ripens, bilocular; endocarp papery, shiny inside.
Morphology Reproductive morphology Seeds
Seeds either 1 per chamber and hemispherical or 2 per chamber and quarter- spherical; seed coat brown and striate; hilar scar pale, apical-adaxial, ± elliptic to circular, total area ± half the size of the seed; endosperm horny, entire; embryo straight, half the diameter of the seed in length; cotyledons subcircular, in the centre of the seed, equalling the laterally oriented radicle.

Native to:

Angola, Benin, Burkina, Burundi, Cameroon, Central African Repu, Chad, Congo, Equatorial Guinea, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Malawi, Mali, Mozambique, Nigeria, Northern Provinces, Rwanda, Senegal, Sierra Leone, Tanzania, Togo, Zambia, Zaïre, Zimbabwe

Sericanthe Robbr. appears in other Kew resources:

First published in Bull. Jard. Bot. Natl. Belg. 48: 27 (1978)

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.
  • Sonké, B., Taedoumg, H. & Robbrecht, E. (2012). A reconsideration of the Lower Guinean species of Sericanthe (Rubiaceae, Coffeeae), with four new species from Cameroon and Gabon Botanical Journal of the Linnean Society 169: 530-554.

Literature

Flora Zambesiaca

  • in Bull. Jard. Bot. Belg. 48: 27 (1978)
  • in Distr. Pl. Afr. 13: maps 406–429 (1978).

Flora of Tropical East Africa

  • Distr. Pl. Afr. 13, maps 406–429 (1978)
  • in B.J.B.B. 48: 27 (1978)

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 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