Ceropegia anjanerica
| Ceropegia anjanerica | ||||||||||||
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| Ceropegia anjanerica | ||||||||||||
| Malpure , MYKamble & SRYadav |
Ceropegia Anja Erica is a species of plant from the subfamily of the asclepiadoideae (Asclepiadoideae). The specific epithet is derived from the type locality of the species, the Anjaneri Mountains in the Indian state of Maharashtra . The species is very rare there; the first person to describe the species found only about 100 plants.
features
Vegetative characteristics
Ceropegia anjanerica is a perennial , herbaceous , upright plant with a bulbous rhizome. The flattened-rounded to disc-shaped root tubers reach a diameter of 2 to 5 cm. The stem axis is round, rough and usually not branched. It grows up to 20 cm high and has a diameter of 1 to 2 mm. The leaves are opposite or cross-opposite and petiolate to almost sessile. The leaf blade is elliptical to narrowly elliptical and 1.5 to 4.5 cm long and 0.4 to 1.3 cm wide. The end of the leaf blade is drawn out to a point. It is rough on the upper side and bare on the underside of the leaf, with the exception of the midrib, the edges of which are also rough.
Inflorescence and flowers
The flowers of Ceropegia anjanerica are solitary and arise in the leaf axils , or outside the leaf axils. The five-fold, zygomorphic flowers are hermaphroditic and have a double flower envelope. The inflorescence stem is 1 to 3 mm long, the actual peduncle 4 to 12 mm long (with a diameter of one to two millimeters). The pointed, rough bracts at the base of the flower stalks stand individually and are linearly shaped; they are 1.2 to 3 mm long and 0.3 to 0.5 mm wide. The pointed, also rough sepals are linear with a length of 9 to 13 mm and a width of 0.6 to 0.8 mm. The yellowish green corolla is 2.5 to 3.5 cm long. The five petals are fused at their base to a 1.2 to 1.5 cm high, slightly curved, smooth outside corolla tube ( sympetalie ). The lower inflated part ("kettle") is colored deep purple. The "kettle" has about twice the diameter of the corolla tube at its narrowest point. The decrease in diameter to the narrowest point approximately in the middle of the corolla tube is gradual. The diameter increases again slightly towards the base of the petal lobes . Inside, the corolla tube is striped with purple lines. The oblong-egg-shaped petal lobes are 1.3 to 1.8 mm long and connected to the tips; they form an approximately egg-shaped, cage-like structure. Inside, the petals are hairy downy. The interstaminal (or outer) secondary crown consists of five lobes deeply incised in the middle, which are densely covered with cilia at the edges . The staminale (or inner) secondary crown has five linear, up to 4 mm long, purple-colored lobes, which usually diverge. The pollinarium measures 0.6 mm in length and 0.5 mm in width.
Fruits and seeds
Two upright follicles usually develop from one flower . These are spindle-shaped, up to 7 cm long and 0.4 cm thick. The elongated egg-shaped seeds are 5 mm long and 2 mm wide, and have a 1 to 1.6 cm long, silky-white head of hair.
Similar species
Ceropegia anjanerica is closely related to Ceropegia attenuata Hook. related, but differs in the smaller flowers, which are only 3.5 cm in size (in contrast to the flowers of C. attenuata , which are up to 7.5 cm in size). The elongated, egg-shaped corolla lobes form a cage-like, approximately egg-shaped structure, while the corolla lobes of C. attenuata are linearly shaped and bent back and form a wedge-shaped, pointed, relatively long, cage-like structure. In the molecular-data phylogeny of 31 Indian taxa of Ceropegia and Brachystelma , Ceropegia anjanerica is the sister taxon of Ceropegia mahabalei Hemadri & Ansari.
Geographical distribution and ecology
According to current knowledge, the species is limited to the plateau of the Anjaneri Mountains, Nashik District, Maharashtra State (India) (19 ° 55 'N, 73 ° 34' E). So far only about 100 plants have been found. They grow there in open terrain at an altitude of 1296 m on well-drained soils.
During the rainy season, the plateau is humid and slightly foggy. During this time the species grows vegetatively. With the end of the rainy season in September, flowering begins. The fruit formation lasts into November.
Systematics and taxonomy
Ceropegia anjanerica was first scientifically described in 2006 by Nilesh Vijay Malpure, Shamarao Yashwant Kamble and Shrirang Ramchandra Yadav. The authors found (only) about 100 plants at the type location. No other locations have been known since then. Ceropegia anjanerica is accepted as a valid species by both the authors of the "Plant List" and by U. Meve in the "Ceropegia Checklist". The species is endangered due to its rarity and the very limited occurrence.
According to the molecular genetic analysis of the Indian species of the genus Ceropegia , Ceropegia anjanerica Malpure, MYKamble & SRYadav is the sister species of Ceropegia mahabalei Hemadri & Ansari.
supporting documents
literature
- Nilesh Vijay Malpure, Shamarao Yashwant Kamble and Shrirang Ramchandra Yadav: A new species of Ceropegia L. from the Western Ghats of India with a note of the Attenuatae of Huber. In: Current Science , Volume 91, No. 9, 2006, 1140-1142, PDF
Individual evidence
- ↑ Siddharthan Surveswaran, Mayur Y. Kamble, Shrirang R. Yadav and Mei Sun: Molecular phylogeny of Ceropegia (Asclepiadoideae, Apocynaceae) from Indian Western Ghats. In: Plant systematics and evolution , Volume 281, 2009, 51-63, doi : 10.1007 / s00606-009-0182-8
- ^ 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 March 23, 2013.
- ↑ 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.
- ↑ K. Sri Rama Murthy, R. Kondamudi, M. Chandrasekhara Reddy, S. Karuppusamy, T. Pullaiah: Check-list and conservation strategies of the genus Ceropegia in India. In: International Journal of Biodiversity and Conservation , Volume 4, No. 8, 2012, pp. 304-315 doi : 10.5897 / IJBC12.011
- ↑ Siddharthan Surveswaran, Mayur Y. Kamble, Shrirang R. Yadav, Mei Sun: Molecular phylogeny of Ceropegia (Asclepiadoideae, Apocynaceae) from Indian Western Ghats. In: Plant Systematics and Evolution , Volume 281, No. 1-4, 2009, pp. 51-63 doi : 10.1007 / s00606-009-0182-8