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


Solanaceae, Jennifer M Edmonds. Oliganthes, Melongena & Monodolichopus, Maria S. Vorontsova & Sandra Knapp. Flora of Tropical East Africa. 2012

Morphology General
Evergreen shrubs, all vegetative and floral parts conspicuously pubescent with eglandular and glandular-headed hairs usually intermixed with stalked glands
Morphology Leaves
Leaves alternate; petioles scabrid. Inflorescences terminal subcorymbose leafopposed cymes, usually many-flowered. Calyx tubular or campanulate, somewhat zygomorphic with four or five sometimes unequal teeth; netveined, scabrid externally
Morphology Reproductive morphology Flowers Corolla
Corolla infundibuliform, tubular or trumpet-shaped, basal tube spirally twisted and tapering towards the calyx, terminating in five lobes which partially reflexed together with apical part of the tube
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, usually included; filaments unequal, two lower posterior fused to basal quarter of corolla tube and two upper lateral fused to apical quarter of the tube, all densely pilose and becoming thicker at point of fusion; anthers unequal, lateral smaller and glabrous, posterior larger and pilose, elongate, dorsifixed
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary bilocular, ovules numerous; disc annular, smooth; style filiform below, becoming thicker and rugose for upper half, curved beneath the stigma, glabrous, usually included; stigma broadly dilated, somewhat sagittate, bilobed
Morphology Reproductive morphology Fruits
Fruit globose or ovoid dehiscent bivalvate capsule, valves often bifid, usually wholly enclosed by accrescent persistent calyx
Morphology Reproductive morphology Seeds
Seeds numerous, cuboidal to obovoid, reticulate.
Although Mabberley (in Mabberley’s Plant Book, 3rd ed.: 826 (2008)) considers Streptosolen to be a synonym of Browallia, the two genera have been retained separately here, as in Hunziker (2001) and all other recent African treatments of the family. Hunziker used habit and a number of floral characters together with pollination vectors to differentiate these genera; they are also reported to differ in their basic chromosome number. Molecular work places these two genera firmly within the same clade (cf. Olmstead et al. in Taxon 57: 1167 (2008)) but there is as yet no molecular data on their relationship at the species level. If these two genera prove to be unequivocably conspecific, Streptosolen would be synonymised with Browallia with the two species Browallia jamesonii and B. americana occurring in the FTEA area. Streptosolen is characterised by colourful tubular orange-red flowers, and is often grown as an ornamental.

Native to:

Ecuador, Peru

Introduced into:

Bolivia, Colombia, Costa Rica, East Himalaya, Ethiopia, Kenya, Myanmar, Tanzania, Zimbabwe

Streptosolen Miers appears in other Kew resources:

First published in Ann. Mag. Nat. Hist., ser. 2, 5: 208 (1850)

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. Scientific Data 8: 215.


Flora of Tropical East Africa

  • Ann. Mag. Nat. Hist., Ser. 2, 5: 208 (1850);
  • Hunziker, Gen. Solanaceae :90–91 (2001)

Flora of Tropical East Africa
Flora of Tropical East Africa

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.