Thunbergia usambarica Lindau

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Thunbergia usambarica

Photo: Bart Wursten
Higher slopes below Nhandore peak, Mt Gorongosa

Thunbergia usambarica

Photo: Bart Wursten
Forest on slopes below Nhandore peak, Mt Gorongosa

Thunbergia usambarica

Photo: Stefaan Dondeyne
Just below Carvalho's mansion, Mt Tsetsera

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Synonyms: Thunbergia swynnertonii S. Moore
Common names:
Status: Native
Erect or semi-prostrate perennial. Stems several, up to 1 m long, 4-angled, arising from a creeping rootstock. Leaves: petiole 2-11 cm long; lamina ovate, rarely oblong-lanceolate, up to 8-16 × 4-11 cm, glossy, palmately veined, glabrous to densely puberulous and sometimes with longer setose hairs; base cordate with hastate lobes; margin crenate to coarsely toothed with up to 7 teeth on each side. Flowers solitary or in racemes arising from lower axils. Bracteoles 0.9-2.5 cm, pale green with conspicuous dark green reticulation. Calyx 1-3 mm long. Corolla white (rarely pale blue); throat yellow; tube 2-3.5 cm long. Capsule 7-10 mm wide; beak 10-18 mm long.
Notes: Formerly included as a form of Thunbergia petersiana but now separated on the basis of the white flowers, the shorter corolla tube and the different habitat and altitude range.
Derivation of specific name: usambarica: after the Usambara mountains in Tanzania where the type specimen, Holst 215, was collected in 1891.
Habitat: In montane forest, in clearings and at the margins, at higher altitudes (above 1100 m)
Altitude range: Above 1100 m
Flowering time:
Worldwide distribution: From Congo, Burundi southwards through East Africa to Malawi, Zimbabwe, Mozambique and South Africa.
Mozambique distribution: N,T,MS
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 20. As Thunbergia swynnertonii

Vollesen, K. (2013). Acanthaceae (Part 1) Flora Zambesiaca 8(5) Pages 36 - 37.

Other sources of information about Thunbergia usambarica:

Our websites:

Flora of Malawi: Thunbergia usambarica
Flora of Zimbabwe: Thunbergia usambarica

External websites:

African Plants: A Photo Guide (Senckenberg): Thunbergia usambarica
BHL (Biodiversity Heritage Library): Thunbergia usambarica
EOL (Encyclopedia of Life): Thunbergia usambarica
ePIC (electronic Plant Information Center): Thunbergia usambarica
Flora Zambesiaca web site: Thunbergia usambarica
GBIF (Global Biodiversity Information Facility): Thunbergia usambarica
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Thunbergia usambarica
iNaturalist: Thunbergia usambarica
IPNI (International Plant Names Index): Thunbergia usambarica
JSTOR Plant Science: Thunbergia usambarica
Kew Herbarium catalogue: Thunbergia usambarica
Mansfeld World Database of Agricultural and Horticultural Crops: Thunbergia usambarica
Plants of the World Online: Thunbergia usambarica
Tropicos: Thunbergia usambarica
Wikipedia: Thunbergia usambarica

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave 2007-22

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2022). Flora of Mozambique: Species information: Thunbergia usambarica., retrieved 21 May 2022

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