Brunfelsia jamaicensis
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Illustration of Brunfelsia jamaicensis (as Brunfelsia nitida var. Jamaicensis ) |
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| Brunfelsia jamaicensis | ||||||||||||
| ( Benth. ) Griseb. |
Brunfelsia jamaicensis is a species from the Brunfelsia section of the genus Brunfelsia . The plants are endemic to Jamaica and are considered critically endangered.
description
Vegetative characteristics
Brunfelsia jamaicensis grows up to 10 m high. The leaves are elongated lanceolate and blunt to the front, membranous to leathery and have a length of 7.5 to 10 cm and a width of 2.5 to 4 cm. The leaf stalks are 4 to 6 mm long and trough-shaped. The leaves are alternate on the twigs, but at the tips of the young shoots they are clustered.
Inflorescences and flowers
The flowers stand individually in the axils of the upper leaves on short flower stalks. The calyx is bell-shaped, provided with five rounded calyx teeth, finely haired or ciliate and can be colored purple. The crown is yellow, the cylindrical corolla tube is about nine to twelve times as long as the chalice and about twice as long as the diameter of the coronet. The five corolla lobes are rounded, with entire margins and slightly wavy. The four stamens are divided into two pairs, which differ in the length of the stamens . The stylus does not protrude beyond the corolla tube.
fruit
The fruits are capsules that are green when ripe and have a thick, firm pericarp .
Occurrence
The species occurs exclusively in Jamaica . They colonize cloud forests at higher elevations there.
Danger
In the Red List of Threatened Species of the International Union for Conservation of Nature and Natural Resources is Brunfelsia jamaicensis as " vulnerable (VU) " (endangered) (high risk) classified. The reason for the endangerment is the destruction of the sites and the displacement by introduced species.
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Individual evidence
Most of the information in this article has been taken from the sources given under literature; the following sources are also cited:
- ^ World Conservation Monitoring Center 1998. Brunfelsia jamaicensis . In: 2007 IUCN Red List of Threatened Species . IUCN 2007, accessed March 22, 2008.
literature
- AHR Griesebach: Brunfelsia jamaicensis In: Flora of the British West Indian Islands. London 1864, p. 432.
- William Jackson Hooker (Ed.): Brunfelsia nitida var. Jamaicensis In: Curtis's Botanical Magazine. Volume 73, Series 3, Number 3, 1847. Plate 4287.
- 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).
