Thunbergia alata

Thunbergia alata

Thunbergia alata, commonly called Black-eyed Susan vine, is a herbaceous perennial climbing plant species in the Acanthaceae family. It is native to Eastern Africa, and has been natrilized in other parts of the world, it is found in Cerrado vegetation of Brazil and Hawaii and is found in eastern Australia and the southern USA in the states of Texas and Florida. It is grown as an ornamental plant in gardens and in hanging baskets.

Description

Depending on the conditions,Thunbergia alata grows to a height of 6-8 ft. (1.8-2.4 m) in tropical zones, but much less as a container plant or as an annual. It has twinning stems with heart or arrow-shaped leaves. It favours sun to partial shade and the flowers, though typically a warm orange can range through red, orange, red-orange and bright yellow with the characteristic chocolate-purple centre which inspires the common name.

Growth and care

Soft five-petal blooms appear in late Spring/early Summer, mid Summer and again in late Summer, early Autumn (Fall). The leaves are heart shaped dicotyledons and the plant is an evergreen perennial. The plant is self-propagating but propagation methods for gardeners include herbaceous stem cuttings, and from seed. In the northern hemisphere seed is sown indoors before last frost and direct sowing after the last frost of the season.

To collect seeds, seedheads are allowed to dry on plants before removal and seed collection.

Synonyms

  • Endomelas alata (ex Sims) Raf.
  • Thunbergia alata ex Sims var. fryeri (Vilm.) Hasselbr.
  • Thunbergia alata Bojer ex Sims var. albiflora Kuntze
  • Thunbergia alata Bojer ex Sims var. aurantiaca Kuntze
  • Thunbergia alata Bojer ex Sims var. bakeri Hasselbr.
  • Thunbergia alata Bojer ex Sims var. vixalata Burkill
  • Thunbergia alata Bojer ex Sims var. lutea Hasselbr.
  • Thunbergia alata Bojer ex Sims var. reticulata (Hochst. ex Nees) Burkill
  • Thunbergia alata Bojer ex Sims subvar. doddsii (Paxton) Hasselbr.
  • Thunbergia alata Bojer ex Sims var. sulphurea Hasselbr.
  • Thunbergia alata Bojer ex Sims var. albiflora Hook.
  • Thunbergia alata Bojer ex Sims var. alba Paxton
  • Thunbergia alata Bojer ex Sims var. retinervia Burkill
  • Thunbergia albiflora (Hook.) Gordon
  • Thunbergia aurantiaca Paxton
  • Thunbergia backeri Vilm.
  • Thunbergia doddsii Paxton
  • Thunbergia fryeri Vilm.
  • Thunbergia manganjensis T.Anderson ex Lindau
  • Thunbergia reticulata Hochst. ex Nees

See also

References

External links

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