Vanda alpina
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Vanda alpina |
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The orchid Vanda alpina is an epiphytic growing plant from Southeast Asia.
description
Vanda alpina grows as a monopodial epiphyte . The shoot reaches a length of 5 to 18 cm and a diameter of 0.5 to 1 cm. The two-lined, leathery or slightly fleshy thickened leaves are 5 to 16 cm long and 0.7 to 1.4 cm wide. The tip is asymmetrically bilobed.
In June to July, two or three inflorescences appear, each from a leaf axil. The inflorescence axis is 1.5 to 2.5 cm long, one to three fragrant flowers are in the front third. The oval-triangular bracts are 0.2 to 0.3 cm in size. The flower stalk and ovary are yellowish green and measure 1.2 to 2 cm. The flowers are fleshy, yellowish-green, they do not open very wide, their diameter is 1.2 to 2 cm. The sepals are narrow oval, 1.1 to 1.5 cm long and 0.4 to 0.6 cm wide, tapering to a wedge shape at the base. The petals are somewhat smaller, somewhat asymmetrically shaped, abruptly narrowed (nailed) at the base. The lip has no pronounced spur at the base, but a sack-like depression. This is red-brown in color, the base of the lip is white, the blade light green-yellow with purple stripes. The small, rounded side lobes of the three-lobed lip stand upright and are green on the outside and reddish on the inside. The end of the middle lobe is slightly drawn in or indistinctly three-lobed, it has two horn-shaped, curved appendages in front. There may be three lengthwise, short keels on the lip. The column is white, 0.3 to 0.4 cm long, semicircular in cross section. It bears the spherical, white stamen .
The number of chromosomes is 2n = 38.
distribution
Vanda alpina is native to Southeast Asia, its range extends on the southeast slope of the Himalayas from Bhutan via India, Nepal and the south of the Chinese province of Yunnan to northern Vietnam. It occurs at altitudes from 1000 to 1600 meters.
Systematics and botanical history
Vanda alpina was found by Gibson in India in 1836, he sent live plants to England, where it was described by Lindley as Luisia alpina in 1838 . Lindley himself changed this classification in 1853 by placing it in the genus Vanda . In 1986 Garay established the genus Trudelia with Trudelia alpina as a type species, which is now viewed as a synonym for Vanda again. The very similar Vanda griffithii is occasionally used as a synonym for Vanda alpina . The other species classified as Trudelia are also quite similar, such as Vanda cristata and Vanda chlorosanthes .
supporting documents
- ↑ a b c d 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 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. 1212 .
- ↑ a b c H. Bechtel, Ph. Cribb, E. Launert: Orchideenatlas . 3. Edition. Ulmer, Stuttgart 1993, ISBN 3-8001-6199-0 , p. 448-449 .
- ↑ Rafaël Govaerts (ed.): Vanda alpina. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 10, 2020.
