Ceropegia jainii

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Ceropegia jainii
Flower of Ceropegia jainii

Flower of Ceropegia jainii

Systematics
Family : Dog poison family (Apocynaceae)
Subfamily : Silk plants (Asclepiadoideae)
Tribe : Ceropegieae
Sub tribus : Stapeliinae
Genre : Candlestick flowers ( Ceropegia )
Type : Ceropegia jainii
Scientific name
Ceropegia jainii
Ansari & BGKulk.

Ceropegia jainii is a species of the subfamily of the silk plant family (Asclepiadoideae).

features

Vegetative characteristics

Ceropegia jainii is an upright, only 6 to 10 cm high and non-twisting herbaceous , perennial plant . The shoots are unbranched, sparsely hairy and bald with age. It has an approximately spherical to flattened tuber with a diameter of 2 to 3 cm. As a rule, only one shoot grows from a tuber, rarely two shoots. The short-stalked, opposite leaves are elliptical to oblong-elliptical in shape, and two to 4 cm long and 0.5 to 1 cm wide. The leaf stalks are one to two millimeters long and hairy. The leaf tops and the margins are green and hairy, the undersides, with the exception of the leaf veins, are pale and bare.

Inflorescence and flowers

The short-stalked inflorescence contains only one flower; the stalk is 4 to 6 mm long and hairy or largely bald. The bracts measure 1.5 to 2 mm in length. The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope. The sepals are 2.5 mm long, elongated and glabrous; The five petals are fused in the lower half to form an externally smooth corolla tube ( sympetalie ). The corolla is up to 2 cm long (high), the base is swollen to the so-called corolla. This is egg-shaped, approx. 5 mm long and reaches a diameter of 5 mm (approx. Half of the total length of the corolla tube i. W. S.). It goes continuously into the actual corolla tube, which is narrowed to 3 mm in diameter at the thinnest point. It widens like a funnel towards the opening of the flower. The area of ​​the crown cauldron is colored green, the actual crown tube is purple. The crown cup is hairless inside. The inside of the funnel is on a light green background and has red-violet stripes. The purple-colored corolla lobes are linear, 9 to 10 mm long and fused with the tips to form an egg-shaped to almost spherical, cage-like structure with a diameter of about 7 mm. There are also forms with loose, not overgrown tips. The lamina are turned slightly outwards along the longitudinal axis; at the egg-shaped-triangular base they are covered with stiff, white hairs on the inside. The sessile secondary crown is fused cup-shaped at the base. The triangular interstaminal lobes arise from the upper edge of the adhesions area of ​​the secondary crown. They are cup-shaped, about 1.5 mm long and deeply cut at the outer end, forming two triangular appendages that are hairy. The staminal tips are 2.5 mm long, linear to slightly spoon-shaped and incline over the gynostegium . This is approx. 2 mm long (high).

Similar species

The species is closely related to Ceropegia pusilla . Both types are relatively small plants. In Ceropegia pusilla the leaves are linear and on average a little longer. The corolla is also a little longer, but the cup is relatively shorter; it is limited to the lower third of the corolla tube. The tips of the petals are bare in Ceropegia pusilla , and the interstaminal tips are only covered with fine cilia .

Fruits and seeds

Fruits and seeds are not known.

Geographical distribution

The species is native to the Indian state of Maharashtra . The holotype , the only specimen described so far, comes from Ambolighat in Ratnagiri district. The species seems to be more widespread, as some pictures published on the Internet show.

Taxonomy

The species is accepted as a valid taxon by both the Plant List and the Ceropegia Checklist.

supporting documents

literature

  • Ulrich Meve: Ceropegia . In: Focke Albers, Ulrich Meve (Hrsg.): Succulents Lexicon Volume 3 Asclepiadaceae (silk plants) . Pp. 61–107, Eugen Ulmer Verlag, Stuttgart 2002. ISBN 3-8001-3982-0 (p. 82)
  • MY Ansari, Balwant Govind Kulkarni: A new species of Ceropegia Linn. (Asclepiadaceae) from the Western Ghats in Maharashtra State (India). In: Bulletin of the Botanical Survey of India , Volume 22, 1980, pp. 221-222.

Individual evidence

  1. ↑ a b c Flowers of India
  2. ↑ www.kaasplateau.in picture by Ceropegia jainii
  3. ^ 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 February 4, 2014.
  4. ↑ 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.

Web links