Ceropegia paricyma
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Ceropegia paricyma is a species of the subfamily of the silk plants (Asclepiadoideae).
features
Appearance, root, stem and leaf
Ceropegia paricyma is a perennial herbaceous plant . A relatively small, flattened, spherical root tuber with a diameter of 15 mm and a height of 10 mm , which has a cracked bark , is formed as a perennial organ . The sparsely hairy or bald, herbaceous and twisting shoot axes that sprout annually have a diameter of 2 mm and are about 1 meter (up to 2 meters) long (high). The leaves are divided into a petiole and a leaf blade. The leaf stalk is 8 to 35 mm long. The slightly fleshy, seldom somewhat succulent, simple, delicate, bald or somewhat hairy leaf blades are elliptical, ovoid to broadly lanceolate, almost triangular with a heart-shaped blade base, sometimes lobed and pointed, with a length of 3 to 10 cm. The leaf margins are whole or toothed.
Inflorescence and flower
The often paired, mostly short-stalked, occasionally sessile inflorescences contain two to six flowers. The flowers open one by one. The flower stalks are relatively short with a length of 4 to 10 mm.
The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope . The five sepals are narrow triangular with a length of about 2 mm. The corolla is 1.5 to 2.5 cm long and cream-colored with purple spots. The five petals are fused into a straight, slender, outside largely bare corolla tube ( sympetalie ), which takes up about two thirds of the total length of the corolla. The lower third of the corolla tube is inflated into a spherical shape; the so-called "crown kettle" has a diameter of about 5 mm. It is hairy inside and out. Above the "crown basin", the corolla tube gradually decreases to 2 mm in diameter and it is not widened towards the mouth of the flower. The corolla lobes are linear to spoon-shaped with a length of 4 to 12 mm. The corolla lobes are fused with the outer ends and form an egg-shaped, cage-like structure. The leaflets of the corner are bent back along the longitudinal axis on the base, completely folded over in the further course towards the outside and the inside are dark green to black and hairy. The sessile to short-stalked secondary crown is plate-shaped in the lower area and has a length (height) of 3 mm and a width (diameter) of 3 mm. The tips of the interstaminal , outer corolla, with short hairs on the upper side , are about 1 mm long and cut very deeply at the end; the two processes have an awl shape and spread apart. The awl-like tips of the staminal , inner secondary crown are 2.5 to 3 mm long; they stand upright and then bow together; the tips are curved outwards.
Fruit and seed
The paired follicles are slender spindle-shaped with a length of about 8 cm and a diameter of 2 to 3 mm. Information on the seeds is not yet available.
Occurrence
Ceropegia paricyma occurs in the following countries: Tanzania , Zambia , Zimbabwe , Mozambique , Namibia and Malawi . They grow there in light Milletia - Cussonia forests and thickets at altitudes of 65 to 900 meters.
Taxonomy
The first description of Ceropegia paricyma was in 1898 by Nicholas Edward Brown . The holotype comes from an unspecified location on Lake Malawi in Malawi . The following synonyms for Ceropegia paricyma NEBrown are known: Ceropegia dentata NEBr. (Holotype from Mozambique) and Ceropegia mutabilis Werderm. (Holotype from Tanzania).
supporting documents
literature
- Henk J. Beentje (Eds.), David Goyder, Timothy Harris, Patrick Siro Masinde, Ulrich Meve, Johan Venter: Flora of Tropical East Africa, Apocynaceae (Part 2). Royal Botanic Gardens, Kew, 2012, ISBN 978-1-84246-396-3 , pp. 115-530 ( Ceropegia paricyma, p. 238)
- Robert Allen Dyer: Ceropegia, Brachystelma and Riocreuxia in southern Africa. VIII, 242 pp., Rotterdam, Balkema, 1983 ISBN 90-6191-227-X (pp. 201–202)
- Ulrich Meve: Ceropegia . In: Focke Albers, Ulrich Meve (Hrsg.): Succulents Lexicon Volume 3 Asclepiadaceae (silk plants) . Pp. 61–107, Eugen Ulmer Verlag, Stuttgart 2002. ISBN 3-8001-3982-0 (p. 93)
- Herbert H. Huber: Revision of the genus Ceropegia. In: Memórias da Sociedade Broteriana , Volume 12, 1957, pp. 1–203, Coimbra (description of Ceropegia paricyma pp. 152–153)
Individual evidence
- ^ Peter Vincent Bruyns: Ceropegia, Brachystelma and Tenaris in South West Africa. In: Dinteria , Volume 17, 1984, pp. 3–84, Windhoek (pp. 45–48)
- ^ A b John Gilbert Baker, Nicholas Edward Brown, Thomas Archibald Sprague, Walter E. Ledger, Charles Henry Wright: Diagnoses Africanae: XXXI. In: Bulletin of Miscellaneus Information Royal Gardens Kew , Volume 1909, No. 8, 1909, pp. 325–329 Online at JSTOR (on p. 327 Nicholas Edward Brown describes Ceropegia dentata )
- ↑ Masinde in Beentje et al .: Flora of Tropical East Africa , 2012, p. 238.
- ↑ Nicholas Edward Brown: DCXXIX Diagnoses africanae. In: Bulletin of miscellaneous information Royal Gardens at Kew , Volume 1898, 1898, pp. 301-310, (p. 309). Online at www.botanicus.org
- ↑ Erich Werdermann: Revision of the East African species of the genus Ceropegia. In: Botanical Yearbooks for Systematics, Plant History and Plant Geography , 70, 1939, pp. 189–232, Leipzig (pp. 218–219)