Ceropegia bonafouxii
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| Ceropegia bonafouxii | ||||||||||||
| K. Schum. |
Ceropegia bonafouxii is a species of plant from the subfamily of the asclepiadoideae (Asclepiadoideae).
features
Vegetative characteristics
Ceropegia bonafouxii is a perennial plant . As a perennial organ , it forms root tubers that are rounded and flattened with a diameter of 2 to 3 centimeters. The twisting shoot axes are annual, 1 to 2 meters long and measure 1 to 3 millimeters in diameter. They are trimmed with shorter and longer hair. The leaves are divided into a petiole and a leaf blade. The petiole is 8 to 10 millimeters long. The leaf blade is 3 to 4 millimeters long (exceptionally up to 7 centimeters) and 1.4 to 2.5 centimeters wide (rarely up to 4 centimeters) elliptical to ovate. The underside of the leaf is densely hairy and the top is more sparsely hairy.
Inflorescence and flower
In the sessile inflorescence one to three flowers arise from the leaf nodes. The flower stalks are 1 to 2 inches long and shaggy hairy. The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope . The five hairy sepals are subphrate with a length of about 4 millimeters. The corolla is 3 to 4 inches long and bottle-shaped. The five petals are fused in the lower two thirds to form an externally hairy corolla tube ( sympetalie ). The basal quarter is inflated in the form of an elongated ellipse ("crown bowl") and 11 to 15 millimeters long and has a diameter of 5 millimeters. The "crown kettle" has whitish-greenish and red-brown stripes on the outside. The crown bowl narrows abruptly to 2 millimeters at the top. The actual corolla tube is purple on the inside and widens to 4 millimeters towards the mouth of the flower. The linear shaped petals are 5 to 8 millimeters long. The lamina of the corolla lobes are bent outwards along the central axis, the tips are fused. They form an elongated, egg-shaped, about 7 millimeters long, cage-like structure with a velvety green interior. The short-stalked, whitish secondary crown is fused in a cup-shaped manner at the base. The tips of the outer interstaminal corolla are pocket-like and about 1 millimeter long. The tips of the staminal, inner secondary crown are 2 millimeters long, hairy, linearly shaped and standing upright. They bend over the gynostegium , sometimes the ends are curved a little inward.
Fruits and seeds
The paired follicles are slender spindle-shaped with a length of about 10 centimeters and a diameter of 3 millimeters.
Similar species
Ceropegia bonafouxii is related to Ceropegia meyeri and Ceropegia abyssinica .
Occurrence
The distribution area of Ceropegia bonafouxii extends from Angola via Namibia , Zambia, Zimbabwe to Botswana. In Namibia, it grows on sandy soil in the loose Acacia - Combretum -Wäldern.
Taxonomy
Ceropegia bonafouxii was first described in 1904 by Karl Moritz Schumann in the 33rd volume of the journal Botanical Yearbooks for Systematics, Plant History and Plant Geography , on p. 327. Meve uses the synonym Ceropegia saxatilis S.Moore, a name that is invalid according to Art. 53.1 of the International Code of Nomenclature for Algae, Mushrooms and Plants .
supporting documents
literature
- 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. 67)
- Robert Allen Dyer: Ceropegia, Brachystelma and Riocreuxia in southern Africa. VIII, 242 pp., Rotterdam, Balkema, 1983 ISBN 90-6191-227-X (pp. 225-226)
Individual evidence
- ^ Karl Moritz Schumann: Asclepiadaceae africanae. Botanical yearbooks for systematics, plant history and plant geography, 33: 322-331, Leipzig 1904. Online at www.biodiversitylibrary.org (p. 327)