Synonyms:
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Thunbergia swynnertonii S. Moore
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Common names:
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Frequency:
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Status:
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Native |
Description:
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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:
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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:
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usambarica: after the Usambara mountains in Tanzania where the type specimen, Holst 215, was collected in 1891. |
Habitat:
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In montane forest, in clearings and at the margins, at higher altitudes (above 1100 m) |
Altitude range: (metres) |
Above 1100 m |
Flowering time: | |
Worldwide distribution:
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From Congo, Burundi southwards through East Africa to Malawi, Zimbabwe, Mozambique and South Africa. |
Zimbabwe distribution:
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E |
Growth form(s):
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Endemic status:
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Red data list status:
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Insects associated with this species:
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Spot characters:
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Display spot characters for this species |
Literature:
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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.
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