Browallia americana
Browallia americana
Browallia americana is a species of the genus Browallia in the nightshade family (Solanaceae ).
Description
Browallia americana is an erect or climbing growing herbaceous plant that reaches a height of up to 70 cm. The stems are usually tomentose hairy green and fine with forward-only, simple or glandular trichomes. The leaves are ovate and up to 5 cm long. To the front they are pointed or tapered at the base they are cut off, blunt or short acuminate. The leaf margin is entire or almost entire. The top is occupied glabrous or with scattered simple trichomes. The underside is pubescent along veins puberulous with fine, forward-only, sometimes glandular trichomes.
The showy flowers have a 5 to 10 mm long, verkahlenden or occupied with scattered long, simple, often glandular trichomes chalice. This is lobed to about 1/ 4 of the length, the lobes are pointed or rounded. The calyx tube is angulated and in the fruit of wide cup-shaped. The crown is salverform and blue, mauve, purple or white in color. The corolla tube reaches a length of 12 to 15 mm and is hairy pubescent. The coronary band measures 10 to 15 mm in diameter, on the bottom it is hairy pubescent along the ribs.
The four stamens are in two pairs. The upper pair is flattened and widened, so that it receives a bracket-like shape. The stamens of the two stamens are densely pubescent with branched, colored trichomes. The stamens of the lower two stamens are only slightly flattened and less hairy. The anthers are yellow. The ovary is 1 to 1.5 mm long and hairy at the top with simple multicellular trichomes. The scar is bilobed, each of the lobes is again pressed, so that the scar appears almost vierlappig.
The fruit is a capsule upright, which is enclosed by the membranous becoming chalice. It comprises a plurality of seeds.
Occurrence
The species is found in South and Central America.
Documents
- W. G. D' Arcy: 170 Family: Solanaceae. In: Robert E. Woodson, Jr., Robert W. Schery (ed.). Flora of Panama, Part IX, Annals of the Missouri Botanical Garden, Volume 60, Number 3, Pages 573-780, 1973