Vanda cristata
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The orchid Vanda cristata is an epiphytic growing plant from Southeast Asia. It is occasionally used as an ornamental plant.
description
Vanda cristata grows as a monopodial epiphyte. The shoot reaches a length of 6 to 18 cm and a diameter of 0.6 to 0.8 cm. The two-line, thick leathery, belt-shaped leaves are 7.5 to 15 cm long and 0.6 to 1.8 cm wide. The tip is cut off, three-toothed or toothed irregularly.
In March to June (according to Flora of China in May) two or three inflorescences appear each from a leaf axil. The inflorescence axis is 3 to 4.5 cm long, one to six flowers are in the front, slightly zigzag-shaped half. The broad oval bracts are 4 to 6 mm long and 2 to 4 mm wide. The flower stalk and ovary are yellowish green and measure 2 to 3.5 cm. The flowers are fleshy, yellowish green, they open quite wide, their diameter is 3.5 to 5 cm. In higher areas, at most two flowers, which are very large, are formed, while plants from lower areas form several small flowers. The sepals are lanceolate, 2 to 3 cm long and 0.5 to 1 cm wide, tapering at the base in a wedge shape. The petals remain narrower. The white to yellow lip has dark purple to reddish brown stripes along its length and has five to seven quills running lengthways. It has a broad, conical spur at the base. The side lobes of the three-lobed lip stand upright, outside they are yellowish green, inside with reddish stripes. The middle lobe divides into two pointed lobes at the end. The white column is 0.4 to 0.8 cm long with a yellow stamen .
The number of chromosomes is 2n = 28, 2n = 38 or 2n = 76.
distribution
Vanda cristata is native to Southeast Asia, its range extends over India, Bhutan, Nepal, the south of the Chinese provinces of Xizang and Yunnan, to the north of Vietnam. It occurs at altitudes from 700 to 1700 meters (up to 2000 meters). It grows as an epiphyte in evergreen forests.
Systematics and botanical history
Vanda cristata was collected by Nathaniel Wallich in 1818 ; he sent live plants to Kew Gardens in England. The first description was published in 1832 by John Lindley . The classification as Trudelia cristata in the genus Trudelia is regarded as a synonym for Vanda cristata , as is Vanda striata .
supporting documents
- ↑ a b c d FG Brieger, R. Maatsch, K. Senghas (eds.): Rudolf Schlechter: Die Orchideen . 3. Edition. Volume I / B. Paul Parey, 1992, ISBN 3-489-78622-X , p. 1211 .
- ↑ a b c Alexandra Bell, Xinqi Chen: Vanda . In: Wu Zhengyi, Peter H. Raven (Ed.): Flora of China . tape 25 . Missouri Botanical Garden Press, St. Louis 2009, pp. 473 ( efloras.org ).
- ↑ a b H. Bechtel, Ph. Cribb, E. Launert: Orchideenatlas . 3. Edition. Ulmer, Stuttgart 1993, ISBN 3-8001-6199-0 , p. 449 .
- ↑ Rafaël Govaerts (ed.): Vanda cristata. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew .
