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This genus is accepted, and its native range is W. Tropical Africa to Uganda.
A specimen from Kew's Herbarium

[FTEA]

Celastraceae, N.K.B. Robson, N. Hallé, B. Mathew and R. Blakelock†. Flora of Tropical East Africa. 1994

Morphology General Habit
Tall lianes with terete stems, conspicuously pubescent, particularly the younger growths
Morphology General Exudate
Latex absent
Morphology Leaves Stipules
Stipules small, obscured by the hairs
Morphology Leaves
Leaves opposite, petiolate; blade entire, with stellate hairs especially beneath
Morphology Reproductive morphology Inflorescences
Inflorescence of paired cymes, without accessory branches, the cymes often combining to form large panicles; bracts caducous
Morphology Reproductive morphology Flowers
Flowers large, pedicellate, 12–15 mm. in diameter; buds subglobose, enclosed to the apex by the sepals
Morphology Reproductive morphology Flowers Corolla
Petals 5, imbricate, pubescent, unguiculate, with conspicuously fimbriate margins
Morphology Reproductive morphology Flowers Disc
Disc spreading, many-lobed, separated by a constriction from an expanded fleshy androgynophore which is crowned with hairs
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3, the filaments bent outwards; anthers with extrorse transverse dehiscence; pollen simple, tricolporate, coarsely reticulate
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary with 3 locules, each with many ovules; stigma punctiform
Morphology Reproductive morphology Fruits
Fruit dry with 3 dehiscent mericarps, each with 2 non-caducous valves; valves densely lined with hairs
Morphology Reproductive morphology Seeds
Seeds densely pubescent around the embryo, with a well-developed wing which has both a marginal vein and marginal raphe (i.e. raphe is not submedian); no pocket-like structure at the point of attachment (such as occur in Simirestis and Pristimera) but sometimes with the vestiges of arils.

Native to:

Cabinda, Cameroon, Central African Repu, Congo, Equatorial Guinea, Gabon, Ghana, Guinea, Gulf of Guinea Is., Ivory Coast, Liberia, Nigeria, Sierra Leone, Sudan, Togo, Uganda, Zaïre

Helictonema Pierre appears in other Kew resources:

First published in Bull. Mens. Soc. Linn. Paris, n.s., 1: 73 (1898)

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 Tropical East Africa

  • N. Hallé, Thèses Fac. Sci. Univ. Paris, Monogr. Hipp. Afr. Occ.: 48 (1958)
  • R. Wilczek in F.C.B. 9: 135, t. 15 (1960)
  • in Bull. Mus. Hist. Nat. Paris, sér. 4, T5, 1983, Sect. B, Adansonia 1: 20 (1983)
  • in Bull. Soc. Linn. Paris, n.s. 9: 73 (1898)
  • in Mém. I.F.A.N. 64: 53, t. 25 (1962)

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