Genlisea angolensis
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| Genlisea angolensis | ||||||||||||
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Genlisea angolensis is a carnivorous plant from the genus of trap traps inthe water hose family (Lentibulariaceae). It isnative towestern central Africa.
description
Genlisea angolensis is believed to be an annual herbaceous plant . The bare leaves stand in a dense, native rosette, are 5 to 10 centimeters long and 5 to 11 millimeters wide; they are spatulate, inverted ovoid to linear, inverted-lanceolate and blunt at the end. The numerous traps reach a length of up to 9 (rarely up to 12) centimeters.
The upright, single to weakly branched inflorescence axis is 15 to 30 (rarely 10 to 60) centimeters high, cylindrical in cross section, glabrous in the lower part, slightly to densely hairy in the upper part with stalked glands and a few scaly leaves that form the bracts same. These are ovate-lanceolate, tapering to a point and reach a length of around 1.5 millimeters, the prophylls are linear-lanceolate and shorter.
On the inflorescence there are rarely only two, usually four to fifteen flowers on upright, 5 to 20 (2 to 30) millimeters long stalks that continue to grow during the flower and fruit and are densely covered with short-stalked glands and a few non-glandular hairs .
The calyx is five-lobed and divided almost to the base, the individual lobes are almost uniformly shaped, ovate-lanceolate, tapering and 1 to 1.5 millimeters long and densely covered with short, non-glandular hairs. The crown is 8 to 10 millimeters long, its color is variable, the color spectrum ranges from blue to violet and purple to white. The up to 3 millimeters long and 3 millimeters wide upper lip is broad-egg-shaped and tapers towards the upper, truncated end, the clearly three-lobed lower lip is up to 4.5 millimeters long and 4.5 to 5.5 millimeters wide. The spur is up to 6 millimeters long, its outer part is covered with short glandular hairs.
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 round capsule fruit opens along elongated slits and has a diameter of 2 to 4 millimeters and releases numerous, less than 1 millimeter long, egg-shaped to approximately round seeds.
Distribution and location
Genlisea angolensis is native to Angola and the Democratic Republic of the Congo on iron-crust soils , the few collections found the plants more often near rivers.
Systematics and botanical history
It was first described in 1924 by Ronald D'Oyley Good on the basis of material collected in Angola in 1906. The dense, non-glandular hairs of the calyx and the dense, glandular hairs of the ovary serve as diagnostic features. Like all African species, Genlisea angolensis belongs within the genus in the Genlisea section .
The species was only collected six times, and unlike many other species of the genus, it is not in culture.
literature
- 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. Vol. 20, No. 3, 2000, ISSN 0107-055X , pp. 291-318, doi : 10.1111 / j.1756-1051.2000.tb00746.x .