img

Thunbergia fragrans

Roxb. (1796)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Lamiales Family: Acanthaceae Genus: Thunbergia

sweet clock vine, sweet clock-vine, white thunbergia

img

Description

Key Characters:

Growth Form: Vines.

Stems:

Roots:

Leaves: Leaves simple. Opposite and decussate (pairs of leaves alternating 90 degrees between nodes). Blades hastate–ovate, 4–10 cm long, 3–5 cm wide. Surfaces puberulent to subglabrous except for trichomes along veins or rarely glabrous. Margins subentire. Petioles 0.5-4.5 cm, hirsute. Stipules absent.

Flowers: Flowers solitary on long peduncles. Flowers bisexual (perfect), axillary, peduncle 1.5-5.5 cm; bracteoles ovate, 1.5-2.5 × 0.8-1.5 cm, puberulent, apex acute; subtended by 2 lanceolate to ovate bracts 13–15 mm long. Calyx lobes 15–16. Corolla 5-lobed, showy, white, 2.5–3 cm long. Stamens 4, in pairs, inserted on the corolla alternate with the lobes, sometimes 1 or more reduced to staminodes; anthers dithecal, opening by longitudinal slits. Ovary superior, 2-carpellate; ovule placentation axile; style filiform, simple.

Fruit: Capsules with two cells; usually dehiscing explosively; subglobose; with a conspicuous sterile beak 1–2 cm long. Seeds not on a modified funiculus that ejects the seeds from the capsule.

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

img
img
img
img

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Molokai Naturalized
Lana'i Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Vegetative Reproduction

Pollinators

Notes

  • Description digitized by Pumehana Imada
  • Native to India and Ceylon; in Hawai‘i cultivated.

Bibliography

Name Published In: Pl. Coromandel 1: 47 (1796)

Other References

Wagner et al. 1990:175 (K, O, M, H); Staples & Herbst 2005:93 (KEY), 95 (DESCR); Starr et al. 2006:31 (Mo); Starr et al. 2010:61 (L)

Wagner, W. L., Herbst, D. R., & Sohmer, S. H. (1999). Manual of the Flowering Plants of Hawai'i, Vols. 1 and 2 (No. Edn 2). University of Hawai'i and Bishop Museum Press.

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
Back to Top