Ceropegia dinteri
Ceropegia dinteri is a species of the subfamily of milkweed plants ( Asclepiadoideae ). The species is native to Namibia.
- 4.1 Literature
- 4.2 Notes and references
Features
Vegetative characteristics
Ceropegia is a perennial, erect, not twining plant with a tuberous rootstock. The tubers vary in diameter up to 12 cm and a thickness of 5 to 6 cm up to beet shaped in the form of flattened rounded - up disc. From the root tuber annually usually unbranched, hairless and herbaceous engines from 15 to 35 cm height appears. The narrow linealischen, 12 to 16 cm ( 8 to 13 cm) long and only up to 4 mm (up to 3 mm) wide leaf blades set directly to the stem axis. The edges are bent back at the bottom of the center rib is designed sublime and clear. Shoots and leaves die off in the dry season.
Inflorescence and flowers
The bloom inflorescence attaches directly to the stem axis; he is first terminal, with further growth of the plant, he finally sits sideways. The flower stalks are 5-8 mm long. The hermaphrodite flowers are zygomorphic and fünfzählig and have a double perianth on. The narrow - lanceolate sepals have a length of 2 to 4 mm. The five petals are fused in the basal half to a straight, bare outside corolla tube ( Sympetalie ). The usually 4 to 10 cm long (high ) corolla is outside greenish-white, greenish inside. The base of the corolla tube ( " Kronkessel " ) is inflated egg-shaped and has a diameter of about 5 mm. The Kronkessel gradually changes into the actual corolla tube, which is reduced to 3 to 4 mm in diameter and extends in a funnel -shaped opening for flowers. Here a diameter of 6-7 mm is measured. The Kronblattzipfel have a triangular base, then abruptly linear shaped and up to 4.5 cm long [Note 1]. The lamina are bent along the longitudinal axis almost entirely outside the inner sides are thereby visible whitish. The tips are free, upright and just slightly spread, often crossed. The triangular base is colored reddish brown, the brown linealische section. At the base of linealischen section of ears sit for long, thick, and subzylindrische vibratile hair, most of the rest of the tail, however, is filled with thin hair and immovable. The sessile Nebenkrone is basally fused and cup shaped like a flat. The hairy tip of interstaminalen outer corona are triangular, upright and walk towards the outer end in two (three after Sukkulentenlexikon [Note 2] ) is splaying extensions from. The tip of the inner staminal corona are 2 mm long, twice as long as the interstaminalen tip and linear (or tongue- shaped) shape, and they tend toward the outer end to the stylus head together and lie down together. The pollinium is ovoid and measures 0.35 x 0.25 mm.
Fruit and seeds
The fruits and seeds are not yet known.
Similar Species
After Ulrich Meve in Sukkulentenlexikon Ceropegia dinteri is closely related to Ceropegia deightonii from West Africa, " if not conspecific ." Similarity exists with Ceropegia antennifera Schltr. , Ceropegia insignis, turricula Ceropegia, Ceropegia Ceropegia attenuata and ledermannii.
Geographical distribution and ecology
The species occurs in Namibia. Locations are: Outjo, Tsumeb, Grootfontein, Otjiwarongo and Rehoboth. It grows in the stony to rocky, dry thorn bush savannah and from 1200 to 1500 m above sea level.
Taxonomy
The species was described by Rudolf Schlechter in 1914 for the first time. The only illustration of the kind are Robert Dyer in 1983 in his work Ceropegia, Brachystelma and Riocreuxia in southern Africa. on page 189, Figure 98, and the color chart 17