Thunbergia serpens Vollesen

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Thunbergia serpens

Habit
Brachystegia woodland
Tondwa GMA, Nsama District
Apr 2024
Photo: Nick Wightman

Thunbergia serpens

Inflorescence
Brachystegia woodland
Tondwa GMA, Nsama District
Apr 2024
Photo: Nick Wightman

Thunbergia serpens

Flower profile
Brachystegia woodland
Tondwa GMA, Nsama District
Apr 2024
Photo: Nick Wightman

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Synonyms:
Common names:
Frequency: Local
Status: Native
Description:
Perennial herb with several trailing, sometimes rooting stems from a creeping woody rootstock with fleshy roots; stems to 75 cm long, terete or subquadrangular, with sparse to dense glossy setose hairs, rarely glabrous. Leaves palmately veined, subglabrous to pilose with glossy setose hairs; petiole 0.3–1.5 cm long; lamina ovate-oblong to elliptic or triangular-ovate, largest 8.5–18 × 4–9 cm; apex acute to obtuse, apiculate, base truncate to cordate with rounded or hastate lobes; margin entire or slightly crenate. Flowers in erect 4–8-flowered axillary racemes; peduncle and axis 5–20 cm long, glabrous to pilose with glossy setose hairs; bracts persistent, 2–7 mm long, rarely lowermost foliaceous and up to 7 × 5.5 cm, glabrous to pilose; pedicels 6–18(32 in fruit) mm long, glabrous to finely puberulous, rarely also with long glossy hairs; bracteoles pale green with conspicuous raised dark green venation, 1.8–2.8(4) × 0.6–1.5(1.7) cm, ovate-oblong to elliptic, acute to obtuse, apiculate, with long glossy capitate glands, densest along veins. Calyx glabrous, 1–3 mm long, the broadly triangular lobes about half. Corolla limb and upper part of tube deep purple-blue to deep royal blue, lower part of tube whitish, throat deep yellow; tube 2.5–4 cm long; lobes 1–1.5 × 1–2 cm, conspicuously glandular ciliate. Capsule c.8 mm wide, beak c.15 mm long. Seeds pale brown, c.7 mm in diameter with reticulate surface and a strong lateral ridge.
Type location:
Zambia
Notes:
Derivation of specific name: serpens: creeping, referring to the habit of the stems to creep or trail along the ground.
Habitat: Brachystegia woodland on sandy to loamy soil and on termite mounds.
Altitude range: 1200 - 1650 m
Flowering time:(Jan-)Feb - Mar(-Apr)
Worldwide distribution: Zambia and DRC
Zambian distribution (Flora Zambesiaca): N,W
Zambian distribution (Provinces): Nw,N
Growth form(s): Perennial.
Endemic status: Near Endemic
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Tuesday 30 July 2024
Literature:

Vollesen, K. (2013). Acanthaceae (Part 1) Flora Zambesiaca 8(5) Pages 34 - 35.

Other sources of information about Thunbergia serpens:

External websites:

African Plants: A Photo Guide (Senckenberg): Thunbergia serpens
BHL (Biodiversity Heritage Library): Thunbergia serpens
EOL (Encyclopedia of Life): Thunbergia serpens
GBIF (Global Biodiversity Information Facility): Thunbergia serpens
Google: Web - Images - Scholar
iNaturalist: Thunbergia serpens
IPNI (International Plant Names Index): Thunbergia serpens
JSTOR Plant Science: Thunbergia serpens
Mansfeld World Database of Agricultural and Horticultural Crops: Thunbergia serpens
Plants of the World Online: Thunbergia serpens
Tropicos: Thunbergia serpens
Wikipedia: Thunbergia serpens


Copyright: Mike Bingham, Annette Willemen, Nicholas Wightman, Bart Wursten, Petra Ballings and Mark Hyde, 2011-24

Bingham, M.G., Willemen, A., Wightman, N., Wursten, B.T., Ballings, P. and Hyde, M.A. (2024). Flora of Zambia: Species information: Thunbergia serpens.
https://www.zambiaflora.com/speciesdata/species.php?species_id=204060, retrieved 21 November 2024

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