Browallia americana
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Browallia americana |
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Browallia americana is a plant type from the genus Browallia in the family of the nightshade family (Solanaceae).
description
Browallia americana is an upright or climbing herbaceous plant that can reach a height of up to 70 cm. The stems are usually green and finely tomentose with forward-facing, simple or glandular trichomes . The leaves are egg-shaped and up to 5 cm long. At the front they are pointed or pointed, at the base they are cut off, blunt or pointed. The leaf margin is entire or almost entire. The top is bald or covered with isolated simple trichomes. The underside is hairy along the leaf veins with fine, forward-facing, sometimes glandular trichomes.
The conspicuous flowers have a 5 to 10 mm long, balding or with isolated longer, simple, often glandular trichomes occupied calyx . This is lobed to about 1/4 of the length, the lobes are pointed or rounded. The calyx tube is strongly angled and becomes broadly cup-shaped on the fruit. The crown is saucer-shaped and colored blue, mauve, purple or white. The corolla-tube reaches a length of 12 to 15 mm and is hairy downy. The coronet measures 10 to 15 mm in diameter, on the underside it is downy hairy along the ribs.
The four stamens are in two pairs. The upper pair is flattened and widened so that it has a bow-like shape. The stamens of these two stamens are densely haired 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 tip with simple multicellular trichomes. The scar is two-lobed, each of the lobes is pressed in again so that the scar appears almost four-lobed.
The fruit is an upright capsule , which is enclosed by the membranous calyx. It contains a multitude of seeds .
The number of chromosomes is 2n = 22.
Occurrence
The species occurs in South and Central America .
literature
- WG D'Arcy: Family 170: Solanaceae . In: Robert E. Woodson, Jr., Robert W. Schery (Eds.): Flora of Panama , Part IX, Annals of the Missouri Botanical Garden, Volume 60, Number 3, 1973. Pages 573-780
Individual evidence
- ^ Browallia americana at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
