Cynanchum marnierianum
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Cynanchum marnieranum |
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| Cynanchum marnierianum | ||||||||||||
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Cynanchum marnierianum is a species of the genus Cynanchum from the subfamily of the silk plants (Asclepiadoideae).
features
Vegetative characteristics
Cynachum marnierianum forms warty shoots with a rough surface that creep or grow prostrate , but not climb. They are up to 50 cm long and have a diameter of about 3.5 to max. 7 mm. The leaves are very small (about 1.5 × 1.5 mm) and scaly.
Inflorescence and flower
The sessile inflorescence is 3- to 6-flowered and designed as umbel . The flower buds are conical and have a faint scent of honey. The corolla is greenish-yellow in color. The corolla lobes are very narrow, 5 to 6 mm long and free to the base. The edges are bent outwards (up to about 90 ° to the inside), a longitudinal furrow is formed on the inside. At the beginning of flowering they are connected to the tips and form filigree, almost round, cup-like, largely open window flowers . In the further course of the anthesis, the corolla lobes spread, but mostly continue to point upwards. The secondary crown measures 1.2 to 2 mm and protrudes over the seated gynostegium , but the stylus head is very long and higher than the secondary crown . It is funnel-shaped and colored white. The interstaminal coronet is not differentiated, the back of the staminal corona rests against the stamens . About half of the interstaminal and staminal side crowns are fused.
Fruits and seeds
The follicles are spindle-shaped with a smooth to slightly warty surface. The apex is often somewhat set off. They are up to about 3.5 cm long, the greatest thickness is already reached in the lower quarter with about 5 mm.
Geographical occurrence
This species is native to southwest Madagascar in the province of Toliara . The species is now grown in specialist nurseries and offered regularly. It is considered easy to keep and is happy to flower.
Taxonomy
Cynanchum marnierianum was first described by the Heidelberg botanist Werner Rauh (1913-2000) in 1970.
literature
- Focke Albers and Ulli Meve (eds.): Succulent lexicon Volume 3 Asclepiadaceae (silk plants). 322 p., Ulmer, Stuttgart 2002 ISBN 978-3-8001-3982-8 .
Web links
- Website of Paul Kaluschke (The corolla tips are already spreading at this blossom)