Salix chingiana
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Salix chingiana is a small tree from the genus of the willow ( Salix ) with dull purple-colored, bare branches. The stipules are permanent, the leaf blades have lengths of 7 to 10 centimeters. The natural range of the species is in China.
description
Salix chingiana is a tree up to 7 meters high with dull purple-colored and bare branches. The leaves have ovate or obliquely ovate stipules and an approximately 1.3 centimeter long, glabrous and sometimes glandular petiole towards the blade. The leaf blade is lanceolate or narrowly lanceolate, 7 to 10 centimeters long and 1.7 to 2 centimeters wide, pointed or pointed, with a wedge-shaped base and a glandular serrated leaf margin. The upper side of the leaf is green, the underside pale and bare.
The male inflorescences are catkins about 3 centimeters long and 6 millimeters in diameter . The peduncle has two or three, rarely up to five leaves. The inflorescence axis is hairy white shaggy. The bracts are narrowly ovate, about 1.7 millimeters long, shaggy hairy on top and glabrous on the underside. Male flowers have an adaxial and an abaxial nectar gland that have grown together at the base to form four lobes. The rarely only three, usually four and rarely up to six stamens have about 3.5 millimeters long and sparsely downy-haired stamens at the base. Female kittens are about 4 centimeters long to flowering and reach a length of 10 centimeters when the fruit is ripe. The peduncle is long and has two or three leaves. The inflorescence axis is finely hairy. The bracts are hairy down on the upper side, the underside is also hairy down or almost bare. Female flowers have a cylindrical or nearly square, adaxial gland. The ovary is ellipsoid-cylindrical or ellipsoidal, rarely ovate, bald and long stalked. The stylus is inconspicuous, the stigma three-lobed. Salix chingiana flowers after the leaves shoot in July, the fruits ripen from July to August.
Occurrence
The natural range is in the southeast of the Chinese province of Gansu and in the east of Qinghai . Salix chingiana grows near bodies of water at altitudes of 2600 to 3100 meters.
Systematics
Salix chingiana is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There she is assigned to the Wilsonia section . It was 1998 by Kin Shen Hao scientifically valid first described . The generic name Salix comes from Latin and was already used by the Romans for various types of willow.
proof
literature
- Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 4: Cycadaceae through Fagaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 1999, ISBN 0-915279-70-3 , pp. 171, 176 (English).
- Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 , p. 552 (reprint from 1996).
Individual evidence
- ↑ a b c d e Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix chingiana , in the Flora of China , Volume 4, p. 176
- ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Wilsonia , in the Flora of China , Volume 4, p. 181
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552
Web links
- Salix chingiana . In:The Plant List. Retrieved September 26, 2012.