Brunfelsia americana

Brunfelsia americana
	Brunfelsia americana
Systematics
	Asterids
	Euasterids I
Order :	Nightshade (Solanales)
Family :	Nightshade family (Solanaceae)
Genre :	Brunfelsia
Type :	Brunfelsia americana
Scientific name
	Brunfelsia americana
	L.

Brunfelsia americana is a species from the Brunfelsia section of the genus Brunfelsia . The shrubs or trees are found in the West Indies , but are alsocultivatedas ornamental plants.

description

Vegetative characteristics

Brunfelsia americana is a shrub that usually grows up to 4.5 m high or a small tree up to 10 m high . The leaves are stalked and elliptical, elliptical-elongated or, conversely, ovoid. The leaf blade is about 4 to 7.5 cm long, the petioles are about 4 mm long.

Inflorescences and flowers

The inflorescences consist of a single flower . The approximately 0.6 mm long calyx is bell-shaped and as long as the flower stem , the five calyx teeth are rounded. The crown is initially pale yellow and fades with age, occasionally the coronet is striped purple. With a length of 5 to 6.25 cm, the corolla tube is eight to ten times as long as the calyx and three times as long as the diameter of the coronet, and it is often curved at the top. The corolla lobes are rounded and have entire margins.

There are usually four stamens present, rarely a fifth stamen is formed. In the area of the scar , the stamens are slightly bent. The pollen is triporate (three-pore) or possibly tricolporate (three-pore).

fruit

The capsule fruits are fleshy yellow-orange and measure about 1.5 cm in diameter.

Chromosome number

The number of chromosomes is 2n = 22.

Brunfelsia americana

Occurrence

The species occurs on several of the West Indies and grows there on rocky coasts. It is the only species of the genus that is also found on some islands in the Lesser Antilles , but can also be found in Puerto Rico and on the eastern tip of Hispaniola . The range includes the islands: Dominica, the Dominican Republic, Guadeloupe, Martinique, Puerto Rico, St. Kitts and Nevis, St. Lucia and the Virgin Islands.

use

The species Brunfelsia americana is grown as an ornamental plant because of its striking flowers .

literature

AHR Griesebach: Brunfelsia americana . In: Flora of the British West Indian Islands. London, 1864. page 432.
Timothy C. Plowman (Author), Sandra Knapp, JR Press (Ed.): A Revision of the South American Species of Brunfelsia (Solanaceae) . Field Museum of Natural History, Chicago August 1998, ISBN 978-9998104693 . (Fieldiana Botany, New Series, number 39).

Individual evidence

^ Brunfelsia americana at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
^ Brunfelsia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved November 28, 2017.

Web links

Commons : Brunfelsia americana - album with pictures, videos and audio files

[IPCN-1] Brunfelsia americana at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis

[GRIN-2] Brunfelsia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved November 28, 2017.