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

[FTEA]

Acanthaceae (part 2), Kaj Vollesen. Flora of Tropical East Africa. 2008

Morphology General Habit
Shrubby herbs or shrubs
Morphology Leaves
Leaves opposite. Flowers single, sessile, in loose terminal spikes; bracts small, green; bracteoles 2, larger, green
Morphology Reproductive morphology Flowers Calyx
Calyx divided almost to base in 4 green sepals which are thickened and horny at base, dorsal and ventral broad, ventral 2-fid, lateral narrower
Morphology Reproductive morphology Flowers Corolla
Corolla glabrous outside, tube widened around stamens, limb split dorsally to give an obscurely 5-lobed or crenate lower lip
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, inserted in middle of tube, not on a thickened flange, subsessile; anthers 1thecous, included, oblong, rounded at both ends, finely bearded
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 2-locular with 2 ovules per locule;.
Morphology Reproductive morphology Flowers Gynoecium Style
Style glabrous.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma entire, bent.
Morphology Reproductive morphology Fruits
Capsule 2-seeded, woody, sessile, beaked, cracking transversely when mature. Seed discoid, tuberculate.
Distribution
Range: 2 species, 1 in Liberia and 1 from Nigeria eastwards to Uganda and NW Tanzania.

Native to:

Cameroon, Congo, Equatorial Guinea, Gabon, Gulf of Guinea Is., Liberia, Nigeria, Tanzania, Uganda, Zaïre

Crossandrella C.B.Clarke appears in other Kew resources:

First published in Bull. Misc. Inform. Kew 1906: 251 (1906)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

Literature

Flora of West Tropical Africa

  • in Kew Bull. 1906: 251.

Flora of Tropical East Africa

  • Heine Adansonia, Ser. 2, 11: 641 (1971)
  • K.B. 1906: 251 (1906)
  • Lindau E. & P. Pf. IV, 3b, Nachtr. 4: 285 (1914)

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