Ceropegia bhutanica
| Ceropegia bhutanica | ||||||||||||
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| Scientific name | ||||||||||||
| Ceropegia bhutanica | ||||||||||||
| H.Hara |
Ceropegia bhutanica is a species of plant from the subfamily of the asclepiadoideae (Asclepiadoideae). As the specific epithet suggests, it is native to Bhutan.
features
Vegetative characteristics
Ceropegia bhutanica is a perennial , herbaceous plant with twining stems. The upper parts of the shoots have two rows of fine soft hairs. The leaves are stalked, the stems 3 to 11 mm long and covered with stiff hairs. The membranous leaf blades are ovate to oblong-ovate, rounded-wedge-shaped at the base and pointed at the outer end. They are 4 to 9 cm long and 11 to 37 mm wide. The edges are hairy, and the midrib on the underside has hairs.
Inflorescence and flowers
The inflorescences are one to four-flowered. The short peduncle is hairy on one side. The slender flower stalks are also hairy on one side. The bracts are small, linear and glabrous. The five-fold, hermaphrodite flowers are zygomorphic and provided with a double flower cover. The sepals are 4 to 6 mm long, linear-lanceolate in shape with a needle-shaped tip. They are splayed distally and bald. The five petals are fused in the lower two thirds to form an externally smooth corolla tube ( sympetalie ). The corolla is a total of 22 to 26 mm long (high), of which the corolla tube accounts for 13 to 18 mm. It is swollen in the lower part to 6 to 7 mm in diameter. The crown basin is very large in relation to the crown tube; it occupies more than half the length of the corolla tube. The linear petals are 8 mm long and fused at the tips. They form a spherical, cage-like structure. They are densely covered with dark purple hair on the inside. The secondary crown is stalked, the base is fused flat, cup-shaped. The outer, interstaminal tips are short triangular, not deeply cut in the middle and densely hairy. The inner staminal tips are, however, linear-spatulate and more than twice as long as interstaminal tips. They protrude 3 mm above the gynostegium .
Fruits and seeds
Fruits and seeds are not yet known.
Geographical distribution and ecology
The species is restricted to Bhutan . So far it has only been found in two locations: near Nimchling (2300 m above sea level), between Thimphu and Tanalum Bridge, Thimphu district and near Ritang , Punakha district . It grows there on gravel banks by rivers in damp, stony ground.
Systematics and taxonomy
The species was first described by Hiroshi Hara in 1968. A second description of the species can be found in the "Flora of Bhutan", which, however, hardly brings any new results. The species is accepted as a valid taxon in both the "Plant List" and the " Ceropegia Checklist".
supporting documents
literature
- Hiroshi Hara: A new species of Ceropegia from Bhutan. In: Bulletin of the Botanical Survey of India , Volume 10, 1969, p. 273.
- AJC Grierson, DG Long: Flora of Bhutan Including a Record of Plants from Sikkim and Darjeeling. Volume 2 Part 2. 1033 p., Royal Botanic Garden Edinburgh 1999 ISBN 1872291430 PDF (390 MB !!) (P.731)
Individual evidence
- ^ Rafael Govaerts (ed.): World Checklist of Selected Plant Families (in review): Ceropegia. Published in: The Plant List. A working list of all plant species. Royal Botanic Gardens Kew, Missouri Botanical Garden, accessed December 2, 2011.
- ↑ Ulrich Meve: Ceropegia Checklist. A guide to alternative names used in recent Ceropegia classification. In: Dennis de Kock, Ulrich Meve: A Checklist of Brachystelma, Ceropegia and the genera of the Stapeliads. International Asclepiad Society 2007, pp. 83-113.