Ceropegia ambovombensis
| Ceropegia ambovombensis | ||||||||||||
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| Scientific name | ||||||||||||
| Ceropegia ambovombensis | ||||||||||||
| Rauh & Gerold |
Ceropegia ambovombensis is a species of the subfamily of the silk plants (Asclepiadoideae). The species occurs in Madagascar.
features
Vegetative characteristics
Ceropegia ambovombensis is a twisting plant with a flattened, spherical tuber measuring up to 7 cm in diameter . The tender and bare shoots are annual. The diameter is 1 to 2 mm. The leaves are stalked, the stems are 3 to 8 mm long and have a longitudinal furrow on the upper side. The succulent leaf blades are lanceolate and pointed. They are 3 to 30 mm long and 5 to 10 mm wide. The tops are dark green and shiny.
Inflorescence and flowers
The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope. The stalked 2 to 3-flowered inflorescences sit on leafy short shoots; the stems are up to 5 mm long. The flower stalks are short. The whitish, somewhat kinked-looking corolla is 25 to 35 mm long (high) and has purple stripes on the inside. The sepals are 3 to 4 mm long. The base of the corolla is inflated to a blunt-ovoid shape and measures 7 to 10 × 4 to 5.5 mm. The corolla tube has a minimum diameter of 2 mm. It widens like a funnel towards the upper end, where it reaches a thickness of 5 to 7 mm in cross section. The corolla lobes are linear to elliptical in shape, 15 mm long and up to 5 mm wide at the base. The tips of the lobes are fused and form a cylindrical, cage-like structure. In the middle, the edges are turned back along the central axis. Inside they are dark purple, outside whitish. The tips are densely covered with flexible, purple, 2 to 5 mm long hairs. The hairy, light green and purple colored corolla is almost sessile and measures 2.5 mm in diameter. The base is grown together like a bowl. The interstaminal lobes of the corolla are divided into two parts (bifid) and drawn out into upright, linear processes that are up to 1.5 mm long. The tips are connected to each other. The staminal corolla lobes measure approximately 1.5 mm in length and are linear-cylindrical in shape. They too stand upright and bend together at the top.
Fruits and seeds
The fruits and seeds are not yet known.
Similar species
The species belongs to the species complex around Ceropegia albisepta . It is most closely related to Ceropegia hermannii .
Geographical distribution
Ceropegia ambovombensis is native to the south and west of Madagascar.
literature
- Ulrich Meve: Ceropegia . In: Focke Albers, Ulrich Meve (ed.): Succulent Lexicon Volume 3: Asclepiadaceae (silk plants). Eugen Ulmer Verlag, Stuttgart 2002, ISBN 3-8001-3982-0 , pp. 61-107.
- Werner Rauh: Ceropegia ambovombensis Rauh & Gerold, une autre nouvelle espèce géophyte du sud-ouest de Madagascar. In: Succulentes (France), Vol. 20, No. 2, 1997, pp. 3-6.