Ceropegia metziana
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Ceropegia metziana is a species of the subfamily of the silk plant family (Asclepiadoideae).
features
Vegetative characteristics
Ceropegia metziana is a perennial , herbaceous plant with twining stems. The leaves are stalked, the stems 2 to 3 cm long. They have a shallow longitudinal furrow and are hairy on the edges. The membranous leaf blades are egg-shaped to oblong-egg-shaped, the apex is pointed, or gradually tapering to a point or pulled out into a small pointed tip (mucronate). The base is pointed, the edges are hairy. The leaf blades are 15 cm long and 5 cm wide. The top is dark green, the underside pale green.
Inflorescence and flowers
The inflorescence has few flowers and a 2 cm long, hairy or smooth stem. They start laterally between the leaf nodes. The bracts are small lanceolate and glabrous. The stiff flower stalks are 2 to 2.5 cm long. The linear sepals are 7 mm long. The hermaphrodite , zygomorphic flowers are five-fold and provided with a double flower envelope. The five petals are fused in the lower part to form an externally smooth corolla tube ( sympetalie ). The corolla is up to 7.5 cm long and pale purple-purple. The lower part of the corolla tube is inflated, the middle part is narrowed and the upper part is widened and spotted in a funnel shape. The corolla lobes are triangular-egg-shaped and 3.5 cm long. They are fused with the ends and form a cage-like structure. The lamina are bent back, matt pink with purple spots. The secondary crown has a diameter of 6 mm. The tips of the outer interstaminal corolla are triangular, incised in the middle and hairy. The tips of the inner staminal corolla are 2.5 mm long and glabrous. They bow together over the gynostegium .
Fruits and seeds
Usually two follicles 23 to 28 cm long emerge from one flower . They are beaked and round with a diameter of 5 mm. The elongated seeds measure 10 × 3 mm. They have a 15 mm long head of hair.
Geographical distribution and ecology
The species occurs only in the southern part of the Western Ghats in the southern Indian states of Karnataka ( Madikeri , Kodagu district , type location), Kerala (districts of Idukki , Kannur , Kollam , Palakkad , Pathanamthitta , Thrissur and Wayanad ) and in Tamil Nadu (districts of Coimbatore and Nilgiris ) in evergreen, tropical forests. In Tamil Nadu it grows between 1200 and 2000 m above sea level. But it is rare there. The species blooms in the natural habitat in September, the fruits appear in November.
Systematics and taxonomy
Ceropegia metziana was first scientifically described by Friedrich Anton Wilhelm Miquel in 1858. As a type location he gave “Mercara” (= Madikeri ) in “orae Canara” (today's Kodagu district ). Herbert Hubert put it in his revision of the genus Ceropegia in the synonymy of Ceropegia oculata . In contrast, both the “Plant List” and the “ Ceropegia Checklist” list Ceropegia metziana as a valid taxon.
Use by humans
According to Ratheesh Narayanan et al. (2007) the leaves of Ceropegia metziana are eaten as a vegetable by the indigenous Palankeera people in the Western Ghats.
supporting documents
literature
- Friedrich Anton Wilhelm Miquel: Analecta Botanica Indica. In: Negotiations of the first class van het Koninklijk-Nederlandsche Instituut van Wetenschappen, Letterkunde en Schoone Kunsten te Amsterdam , 3rd row, Volume 5, 1852, pp. 1–30, Amsterdam Online at Google Books (p. 11/2)
- N Sasidharan. Floristic studies in Parambikulam Wildlife Sanctuary. KFRI Research Report No. 246, 2002, pp. 1-408, Kerala Forest Research Institute, Peechi, Thrissur. ISSN 0970-8103 PDF (p. 193)
Individual evidence
- ↑ List of flora in Shendurney Wildlife Sanctuary PDF ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ a b [1]
- ↑ Threatened Plants of Tamil Nadu PDF
- ^ 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.
- ↑ MK Ratheesh Narayanan, N. Anilkumar (2007): Gendered knowledge and changing trends in the utilization of wild edible greens in Western Ghats, India. Indian Journal of Traditional Knowledge 6 (1): 204-216.
