Salix denticulata
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Salix denticulata is a shrub from the genus of the willow ( Salix ) with mostly 3 to 5 centimeters long leaf blades . The natural range of the species is in Afghanistan , Pakistan , India , China and in Nepal .
description
Salix denticulata grows as a shrub up to 6 meters high. The twigs are hairy at first and later bald. The leaves have a hairless petiole about 2 millimeters long. The leaf blade is ovate or oblong-elliptical, 3 to 5 inches long and 1.2 to 2.2 inches wide. The leaf margin is finely serrated, the leaf base broadly wedge-shaped to rounded, the leaf end pointed or blunt. The upper side of the leaf is green, the underside pale, both sides are bare.
The male inflorescences are catkins about 2.5 centimeters long . The peduncle is short and has three or four small leaves, the axis of the inflorescence is finely hairy. The bracts are elliptical-rounded or obovate, glabrous and about a third as long as the stamens. Male flowers have a cylindrical adaxial nectar gland that reaches about half the length of the bracts. Two stamens are formed, the filaments are shaggy haired near the base, the anthers are yellow. The female kittens are about 4 centimeters long, when the fruit is ripe, about 9 centimeters long. The inflorescence stalk is leafy, the inflorescence axis finely hairy. The bracts are obovate, the upper side is finely hairy at the base, the underside is glabrous. Female flowers have an adaxial nectar gland. The ovary is ovoid-cylindrical or ovoid, bald and almost sitting, the stylus is bilobed, the scar short. The fruits are about 4 millimeters long, ellipsoidally elongated capsules . Salix denticulata flowers in April and May and the fruits ripen in May.
Distribution and ecology
The natural range is in Afghanistan, India, Pakistan, Nepal, the Chinese provinces of Sichuan and Yunnan and the Tibet Autonomous Region . In China, the species grows along rivers at heights of around 2500 meters.
Systematics
Salix denticulata is a species from the genus of willows ( Salix ) in the willow family (Salicaceae). There it is assigned to the Denticulatae section . It was described scientifically in 1850 by Nils Johan Andersson in Kongliga Vetenskaps-Akademiens Handlingar . A synonym of the species is Salix elegans Wall. ex Andersson .
Individual evidence
- ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix denticulata In: Flora of China. Volume 4, p. 205.
- ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Denticulatae In: Flora of China. Volume 4, p. 195.
- ^ Salix denticulata . In: The International Plant Name Index. Retrieved December 28, 2014 .
- ^ Salix denticulata . In: The Plant List. Retrieved December 28, 2014 .
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. 195, 205 (English).
Web links
- Salix denticulata at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 28, 2014.