Invasive Alien Species

Species Name: Thunbergia grandiflora

Family Name:
Acanthaceae
Synonym:
Origin:
Tropical Asia
Description:
A woody climber with stem reaching 200-500 cm length. Long subterranean stolons often present. Petioles are 4-13 cm long.  Leaves opposite, with a cordate, 5-7-nerved base, shallowly to deeply palmati-lobed, 7-18 x 6.5-19 cm. Large flowers with trumpet-shaped, blue or whitish corolla are borne in axillary clusters of 1-2 flowers, or in pendulous racemes; pedicels 4.5-16 cm long. Fruit are globose capsules of 3-5 cm length, containing four flattened seeds; each fruit has a conspicuous, long and woody beak at the end.
Invaded Habitat:
Forest, forest edges, riparian habitat, river sides. Sometimes cultivated as ornamental plants, running wild by its  stolons, locally sometimes in very great numbers.
Distribution:
Ecology:
This vigorous climber spreads mainly vegetatively by stolons. The plant develops an extensive tuberous root system with some tubers reaching 50 cm diameter and 3 m length. The fast growing climber smothers all vegetation up to 12 m above ground, especially along rivers, and becomes the dominant ground cover. Dense infestations can kill host trees by the weight of the stems.
References:
  1. Backer , C. A. & R. C. Bakhuizen Van Den Brink.  1965.  Flora of Java. N.V. P. Noordhoff. Groningen, Netherlands.
  2. Weber, E.  2003.  Invasive Plant Species of the World.  A Reference Guide to Environmental Weeds.  CAB International Publishing.