Blue thunbergia
Thunbergia grandiflora
family
Acanthaceae
origin
Exotic
declaration
Category 3 Restricted Matter (Biosecurity Act 2014)
Must not be distributed or disposed. This means it must not be released into the environment unless the distribution or disposal is authorised in a regulation or under a permit.
Common names
Bengal clock vine, Bengal trumpet, Blue sky flower, Giant thunbergia, Blue sky vine, Clock vine, Blue thunbergia, Blue trumpetvine.
A long-lived vine, with tuberous roots, that grows up to 15 m in height. Its younger stems are square in cross-section and bear oppositely arranged leaves on stalks 4-12 cm long. These leaves are variable in shape and their margins usually have several large teeth or small pointed lobes. Its pale blue, violet or mauve trumpet-shaped flowers (3-8 cm long and 6-8 cm across) have a pale yellow or whitish coloured throat. Each flower is borne on a long stalk (4-5 cm long) and has two leafy bracts (15-40 mm long) at its base. Its fruiting capsules, when produced, are rounded with a long tapered beak (2-5 cm long).
Impact
Impact
Blue thunbergia (Thunbergia grandiflora) is regarded as a significant environmental weed in Queensland, and as a potential environmental weed or "sleeper weed" in the Northern Territory and New South Wales.
Location
Location
Characteristics
Characteristics
Similar Species
Similar Species
Blue thunbergia (Thunbergia grandiflora) is regarded as a significant environmental weed in Queensland, and as a potential environmental weed or "sleeper weed" in the Northern Territory and New South Wales.
