Scientific Name: Thunbergia grandiflora
Common Names: Bengal Trumpet, Bengal Clock Vine, Blue Trumpet Vine, Large-flowered Thunbergia
Duration: Perennial, Evergreen
Growth Habit: Vine
Hawaii Native Status: Introduced. Native to Asia (India and China).
Flower Color: Violet-blue, White
Height: Climbing to 20 feet (6 m) or more
Description: The broadly tubular flowers are 3 inches (8 cm) long with 5 ruffled lobes and a yellow throat. The leaves are green, heart-shaped, and variably angled or lobed with large, pointed lobes.
Here in Hawaii, this naturalized ornamental garden plant is a rampant weed that can cover and smother trees and shrubs.
The similar Laurel Clockvine (Thunbergia laurifolia) has narrower, rarely lobed, non-angular leaves.
Kingdom: Plantae – Plants
Subkingdom: Tracheobionta – Vascular plants
Superdivision: Spermatophyta – Seed plants
Division: Magnoliophyta – Flowering plants
Class: Magnoliopsida – Dicotyledons
Family: Acanthaceae – Acanthus family
Genus: Thunbergia Retz. – thunbergia
Species: Thunbergia grandiflora Roxb. – Bengal trumpet
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