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This genus is accepted, and is native to Africa..

[FZ]

Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

Inflorescences
Inflorescences of involucrate heads of flowers from buds on tuber, unbranched, pedunculate to sessile; peduncles densely covered with imbricate scales; receptacle of male inflorescences flat to slightly convex, of female inflorescences conical to hemispherical Inflorescences of involucrate heads of flowers from buds on tuber, unbranched, pedunculate to sessile; peduncles densely covered with imbricate scales; receptacle of male inflorescences flat to slightly convex, of female inflorescences conical to hemispherical.
Flowers
Female flowers: numerous and densely packed in head; perianth cylindrical, irregularly 2–4-lobed; style long-exserted; ovary inferior, 1-locular Male flowers: fewer and less densely packed in head than female; perianth segments spirally arranged, unequal in length and extent of attachment to synandrium; stamens united into a synandrium Female flowers: numerous and densely packed in head; perianth cylindrical, irregularly 2–4-lobed; style long-exserted; ovary inferior, 1-locular. Male flowers: fewer and less densely packed in head than female; perianth segments spirally arranged, unequal in length and extent of attachment to synandrium; stamens united into a synandrium.
Fruits
Fruits 1-seeded achenes aggregated into a hemispherical infructescence. Fruits 1-seeded achenes aggregated into a hemispherical infructescence.
Distribution
A genus of 1 species restricted to tropical Africa.
Habit
Dioecious or rarely monoecious plants. Dioecious or rarely monoecious plants
Tubers
Tubers irregularly shaped, emitting horizontal, cylindrical, branched rhizomes. Tubers irregularly shaped, emitting horizontal, cylindrical, branched rhizomes

[FTEA]

Balanophoraceae, B. Hansen. Flora of Tropical East Africa. 1993

Habit
Plants dioecious
Tubers
Tuber rhizome-like, cylindrical, branched, swollen at point of contact with host-root
Inflorescences
Inflorescence-bearing stems breaking through buds on the tuber, leaving a short lobed volva basally Inflorescence unbranched, spadix-like with axis obconical, terminally convex, bearing numerous flowers
Stem
Stem with numerous spirally arranged triangular-lanceolate scale-leaves
Flowers
Male flowers pedicellate; perianth-segments 2–6, linear, spirally arranged; anthers 3–6, linear-elongate, united but with apices finally free, 2-thecous and extrorsely dehiscing Female flowers linear-prismatic, densely crowded, perianth tubular, obscurely 2–3-lobed; style 1, exserted
Male
Male flowers pedicellate; perianth-segments 2–6, linear, spirally arranged; anthers 3–6, linear-elongate, united but with apices finally free, 2-thecous and extrorsely dehiscing
Female
Female flowers linear-prismatic, densely crowded, perianth tubular, obscurely 2–3-lobed; style 1, exserted
Infructescences
Infructescence a swollen hemisphere, bearing minute 1-seeded achenes.

Native to:

Angola, Benin, Burkina, Burundi, Cameroon, Central African Repu, Congo, Ethiopia, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, Liberia, Nigeria, Rwanda, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Zambia, Zaïre

Thonningia Vahl appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Harris, D.J. [2263], Central African Republic 63119.000

First published in Skr. Naturhist.-Selsk. 6: 124 (1810)

Literature

Flora of West Tropical Africa

  • Bullock in Kew Bull. 1948: 363.
  • —F.T.A. 6, 1: 436

Flora Zambesiaca

  • Skr. Naturhist.-Selsk. 6: 124 (1810).
  • in Skr. Naturhist.-Selsk. 6: 124 (1810).

Flora of Tropical East Africa

  • B. Hansen in E.J. 106: 367 (1986)
  • Hemsl. in F.T.A. 6(1): 436 (1911)
  • Hook.f. in Trans. Linn. Soc. 22: 29, 42, t. 3 (1856)
  • in Skr. Naturhist-Selsk. 6: 124 (1810)

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

Herbarium Catalogue Specimens
'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

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