Brachystelma foetidum
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![Brachystelma foetidum (from Curtis's Botanical Magazine, London., Vol. 145 [= ser. 4, vol. 15]: Tab. 8817, 1919)](https://de.wikipedia.org/wiki/Datei:Brachystelma_foetidum_145-8817.jpg)
Brachystelma foetidum (from Curtis's Botanical Magazine, London., Vol. 145 [= ser. 4, vol. 15]: Tab. 8817, 1919) |
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| Brachystelma foetidum | ||||||||||||
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Brachystelma foetidum is a species of plant from the subfamily of the asclepiadoideae (Asclepiadoideae). It isnative to southern Africa .
description
Vegetative characteristics
Brachystelma foetidum is a perennial herbaceous plant . This geophyte forms a root tuber with a flattened upper side and a diameter of about 4 cm to 6 cm as a permanent organ. One to several, upright or prostrate, coarsely hairy, annual, herbaceous shoot axes of 7 to 15 cm in height or length grow from the tuber . The leaves are short stalked. The leaf blade ends at the base in a keel in the short stalk. With a length of 5 to 30 mm and a width of 3 to 10 mm, the leaf blade is linear-lanceolate to ovate and elliptical. The underside of the leaf and the leaf margins are hairy, the upper side is smooth.
Inflorescence and flower
The 1 mm long inflorescence stem is hairy downy. The side of the node ( Nodien seated) inflorescence contains two to six flowers.
The hermaphrodite flowers are radially symmetrical and five-fold. The five sepals are lanceolate with a length of about 5 mm. The corolla has a diameter of 25 to 50 mm. It gives off an intense odor of manure. The 6 to 10 mm deep, wide, bell-shaped corolla tube is colored whitish or yellowish with purple spots. The ovate-lanceolate petal tips are 10 to 25 mm long and finely hairy on the outside. Inside they are purple and bare. The edges of the upper two-thirds of the petal lobes are bent outwards along the midrib. Often the edges are greenish-purple in color. The sessile corolla is dark purple in color and overgrown with a cup-shaped base. The interstaminal minor corolla lobes are broadly triangular-ovoid and concave. The interstaminal corolla lobes are incised on the upper edge and can be very hairy on the inside; the hair can also be missing. The staminal minor corolla lobes are approximately 1 mm long and approximately triangular-tongue-shaped and lie on the anthers . The pollinia are shaped roughly like a pear.
Fruits and seeds
The paired or individually standing follicles are slim-spindy with a length of 10 to 12 cm and a diameter of 5 to 6 mm and taper into a blunt beak. The follicles are hairy on the outside.
Similar species
Brachystelma foetidum is closely related to Brachystelma megasepalum and Brachystelma petraeum . The flower size of Brachystelma foetidum is highly variable.
distribution
Brachystelma foetidum occurs in Botswana and the South African provinces of North Cape , Gauteng , Free State , KwaZulu-Natal and Mpumalanga .
Taxonomy
Brachystelma foetidum was from Rudolf Schlechter 1895 in the botanical year books of Systematics, plant history and geography of plants , Volume 20, Supplement no. 51, pp 52/3 first described . The type specimen was found in the mountains near Elsburg (today metropolitan municipality Ekurhuleni , Gauteng province , South Africa ) and came from an altitude of "5400 feet" (= 1646 meters).
swell
literature
- Ulrich Meve: Brachystelma. In: Focke Albers, Ulrich Meve (Hrsg.): Sukkulentenlexikon. Volume 3 Asclepiadaceae (silk plant family) . Eugen Ulmer Verlag, Stuttgart 2002, ISBN 3-8001-3982-0 , pp. 17-43.
- Nicholas Edward Brown: Asclepiadaceae. In: William T. Thiselton-Dyer (Ed.): Flora Capensis: being a systematic description of the plants of the Cape Colony, Caffraria and Port Natal (and neighboring territories). Volume 4, Sect. 1 Vaccinaceae to Gentianeae. Reeve, London 1905–1909 (scanned at Botanicus.org ) (description of Brachystelma foetidum on p. 840/1)
Individual evidence
- ^ Rudolf Schlechter: Contributions to the knowledge of South African Asclepiadaceen. IV. List of the Asclepiadaceans that I collected on my last trip through Natal and Transvaal. In: Botanical yearbooks for systematics, plant history and plant geography. 20 (Supplement No. 51), Berlin 1895, pp. 7–56 (scanned at Botanicus.org ) (description of Brachystelma foetidum on p. 52/3)
