Species information Abo ut Reso urces Hom e A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Thunbergia grandiflora Click on images to enlarge Family Acanthaceae Scientific Name Thunbergia grandiflora Roxb. Roxburgh, W. (1820) Edwards' Botanical Register 6 : Pl. 495, Type: flowered in [Mr. Herberts] hothouse at Spofforth the summer before last .. Found among bushes, etc., uncultivated spots near Calcutta. Leaves and Flowers. Copyright CSIRO Common name Vine, Blue Trumpet; Vine, Clock; Vine, Bengal Clock; Vine, Sky; Blue Sky flower; Blue Thunbergia; Bengal Clock Vine; Sky Flower; Blue Trumpet Vine; Clock Vine; Sky Vine Weed * Stem Can grow into a large vine, stem diameters up to 4 cm recorded. Stems swollen at the nodes or branch sites. Habit. Copyright CSIRO Leaves Leaf blades variable in size and shape, about 9-15 x 3-12.5 cm, petioles about 2-5 cm long. Larger twigs usually hollow. Flowers Flowers about 7-9 cm diam. Calyx cup-shaped, hairy, about 40-50 x 25 mm, completely obscured by the large leafy bracts. Corolla tube about 45 mm long, constricted about the middle, lobes about 25 mm long. Corolla tube cream to yellowish on the inner surface. Stamens four, about 20-25 mm long, anthers about 6-8 mm long. Ovary about 6 mm long, surrounded by a fleshy disk. Style and stigma about 30-35 mm long. Stigma resembles a laterally compressed funnel. Scale bar 10mm. Copyright CSIRO Fruit Features not available. Seedlings Features not available. Vine stem bark and vine stem transverse section. Copyright CSIRO Distribution and Ecology An introduced species originally from India now naturalised in NEQ, CEQ and southwards to south-eastern Queensland. Cultivated in NT and CYP but not known to be naturalised. There is some debate about its ability to set seed but it does regenerate by vegetative means. Altitudinal range from near sea level to 750 m. Usually found near settlements. Grows in rain forest or rain forest margins and will grow over and smother large trees. Natural History & Notes Cultivated as an ornamental in many areas with several varieties but has become a serious weed of rain forest margins and stream side vegetation in the lowlands of NEQ. Vine X Synonyms Flemingia grandiflora Roxb. ex Rottler, Gesellschaft Naturforschender Freunde zu Berlin. Neue Schriften 4: 202-203(1803). RFK Code 2206 CC-BY Australian Tropical Herbarium unless otherwise indicated in the images..