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

[FTEA]

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

Morphology General Habit
Shrub.
Morphology Leaves
Leaves opposite, entire.
Morphology Reproductive morphology Flowers
Flowers one per bract, in dense terminal spiciform cymes; bracts imbricate, foliaceous, papery, in 4 rows; bracteoles 2, glumaceous.
Morphology Reproductive morphology Flowers Calyx
Calyx glumaceous, divided to the base in 5 subequal 1-toothed sepals.
Morphology Reproductive morphology Flowers Corolla
Corolla finely sericeous-puberulent outside; basal part of tube straight, middle part twisted through 180°, apical part straight, split dorsally to give a small entire or 3-lobed lip which due to the twisting of the tube is held dorsally.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, included, inserted just above twisted part of tube on a thickened flange; anthers 1-thecous, oblong, rounded at both ends, finely bearded on one side.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 2-locular, with 2 ovules per locule, glabrous; style glabrous; stigma entire, dilated, truncate.
Morphology Reproductive morphology Fruits
Capsule sessile, ovoid, glabrous.
Morphology Reproductive morphology Seeds
Seed with large pectinate scales.
Distribution
Range: Monotypic genus.

Native to:

Tanzania

Streptosiphon Mildbr. appears in other Kew resources:

First published in Notizbl. Bot. Gart. Berlin-Dahlem 12: 719 (1935)

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

  • K.B. 24: 323 (1970)
  • K.B. 45: 504 (1990)
  • K.B. 49: 405 (1994)
  • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 504 (1997)
  • N.B.G.B. 12: 719 (1935)

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