Genlisea africana
Genlisea africana is a carnivorous plant species of the genus Reuse traps in the family of water hose plants ( Lentibulariaceae ). It is native to Africa.
Description
Genlisea africana is an annual herbaceous plant. The leaves are in a dense basal rosette, are 2-4 (rarely 1-5 ) inches long and 5-9 mm wide; they are spatulate and obtuse at the end. Numerous cases reach lengths of up to 10 centimeters.
The upright, simple or weakly branched inflorescence is 10 to 30 (5 to 50) cm tall, cylindrical in cross-section, smooth in the lower part and weak to hairy in the upper part tightly with stalked glands and staffed by a small number of scale leaves, which the bracts same. These are ovate - lanceolate to linear - lanceolate, tapering to a point and reach a length of 2 to 4 mm, the bracts are linear - lanceolate and shorter.
In him are rarely just one, usually three to ten flowers on erect, 5 to 20 ( 2 to 30 ) mm long, while flowering and fruiting continue growing and densely pubescent with stalked glands flower stems.
The calyx is five-lobed and divided to approximately the approach, the individual lobes are approximately the same shape, ovate - lanceolate, pointed and hairy 2 to 4 millimeters long and dense with stalked glands. The crown is 10 to 12 ( 5 to 18 ) mm long, their coloration is highly variable, the colors range from blue to purple to pink. The spur, however, falls greenish to yellowish, occasionally (Form pallida ) of pure yellow. The outer part of the upper lip, lower lip and spur are covered with short glandular hairs. The up to 5 millimeters long and 4.5 millimeters wide upper lip is ovate oblong- round and tapers towards the top, truncated end, which clearly dreigelappte lower lip is up to 11 millimeters long and 12 millimeters wide, the spur up to 8, rarely 11 millimeters long.
The crescent-shaped stamens are about one millimeter long, the ovary hairy round and dense with short-stalked glands, the stylus is short, the scar einlappig and semicircular. The 2.5 and 3 millimeters long, round to ovoid fruit capsule opens along elongated slots and are numerous, about 0.4 to 0.5 millimeters long, ovate seeds with distinct reticulate surface free.
Distribution and location
Genlisea africana is found in Angola, Zambia, Zimbabwe and the south-east of the DRC.
It is considered a typical type of Dembos. At altitudes 1200-1500 meters, it is also found on the slopes of inselbergs on very wet soils and Ferricreten. She is there part of the very short-lived ephemeral flush vegetation, a plant community that down the slopes flowing water quantities is due to the large only in the rainy season and is characterized by a high proportion of carnivorous plant species and representatives of Eriocaulaceae, Xyridaceae and Burmanniaceae.
Systematics and Botanical History
The first description was in 1865 by the English botanist Daniel Oliver based on Friedrich Welwitsch 1860 collected in Angola material. With it, the first time a fish trap traps species from Africa was known, all species described above came from South America. Like all African species belongs within the genus Genlisea africana in the section Genlisea.
Was described as the only Untertaxon a form Genlisea africana f pallida. It was in 1916 by R. E. Fries delineated means of a copy of Katanga, Zaire, which was characterized by a pure yellow spur. The taxon is however nowadays no longer recognized and synonymy.
Evidence
- Eberhard Fischer, Stefan Porembski, Wilhelm Barthlott: Revision Of The Genus Genlisea ( Lentibulariaceae ) in Africa And Madagascar With Notes On Ecology And phytogeography. In: Nordic Journal Of Botany. Copenhagen 20.2000,3. ISSN 0107- 055X
- Peter Taylor: Lentibulariaceae. In: Flora Zambesiaca. Vol.8, Pt.3, 1988, entry to art online