Salix alatavica
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| Salix alatavica | ||||||||||||
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Salix alatavica is a shrub from the genus of willow ( Salix ) with balding branches and up to 6 centimeters long leaf blades. The natural range of the species is in Asia.
description
Salix alatavica is a shrub up to 1.5 meters high with initially purple and downy hairy later brown or chestnut brown, bare branches. The buds are reddish, shiny and pointed. The leaves have small, egg-shaped, membranous and deciduous stipules . The petiole is 2 to 5 millimeters long, finely haired or glabrous. The leaf blade is 3 to 6 inches long, 2 to 2.5 inches wide, oblong-egg-shaped or elliptical, with a sloping and short pointed tip, a wedge-shaped leaf base and a glandular serrated leaf margin. The upper side of the leaf is green, the underside greenish, initially silky hairy and later balding.
The inflorescences are 4 to 5 centimeters long, 1 to 1.5 centimeters in diameter catkins with a gray-tomentose stalk covered with two to four leaves. The bracts are brownish, black towards the tip, elongated and tomentose. Male flowers have two stamens with gray-felted stamens and yellow, spherical anthers and a nectar gland facing the stem axis. Female flowers have a long-egg-shaped, graufilzig hairy and shortly stalked ovary and zweischlitzige scar and also one faces the stem axis nectar gland. Salix alatavica flowers from June to July with or after the leaves shoot, the fruits ripen from July to August.
Occurrence and location requirements
The natural range is in Mongolia, in Siberia in Russia and in the west of the Xinjiang Autonomous Region in China. In China it grows on mountain slopes at altitudes of 2,700 to 2,800 meters.
Systematics
Salix alatavica is a species from the genus of willows ( Salix ) in the willow family (Salicaceae). There she is assigned to the Glaucae section . It was in 1854 by Serge S. Stscheglejew 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. 241 (English).
- Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).
Individual evidence
- ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix alatavica , in the Flora of China , Volume 4, p. 241
- ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Glaucae , in the Flora of China , Volume 4, p. 241
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552
Web links
- Salix alatavica . In:The Plant List. Retrieved August 15, 2012.