Salix driophila
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Salix driophila is a shrub from the genus of willow ( Salix ). The natural range of the species is in China .
description
Salix driophila grows as a shrub. The twigs are purple-brown or yellowish brown, young twigs are purple-green and tomentose. The leaves are stalked. The leaf blade is elliptical, oblong or rounded. The leaf margin is entire, the end of the leaf blunt or pointed. The upper side of the leaf is green, hairy or almost bare, the underside is greenish and silky-tomentose or hairy down.
The male inflorescences are upright, from 2.5 and usually 4 to 4.5 centimeters long and 6 to 8 millimeters in diameter catkins . The inflorescence stalk is 1 to 2 inches long and has two to five small leaves. The bracts are obovate-oblong, about 1.5 millimeters long, curved, shaggy hairy and have a greenish, blunt end. Male flowers have an elongated-cylindrical, about 0.6 millimeter long, strong, adaxial nectar gland . The stamens are not grown together, 3.5 to 4 millimeters long and finely hairy at the base. The female kittens are up to 5.5 inches long. The bracts are round, about 1 millimeter long, shaggy hairy or glabrous on the upper side. Female flowers have an ovate-cylindrical, strong, adaxial nectar gland, which is about the same length as the bracts. The ovary is ovoid, about twice as long as the bracts, sitting tight and white and daunig hairy. The stylus is formed clearly and bilobed, the scar is entire or split. The fruits are about 3 millimeters long, sedentary and finely hairy capsules . Salix driophila flowers when the leaves shoot in May, the fruits also ripen in May.
Distribution and ecology
The natural range is in the Chinese province of Sichuan , in the northwest of Yunnan and in the east of Tibet . There the species grows on mountain slopes at altitudes of 2100 to 3100 meters.
Systematics
Salix driophila is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There it is assigned to the Eriocladae section . It was first scientifically described in 1916 by Camillo Karl Schneider in Plantae Wilsonianae . Synonyms of the species are not known.
Individual evidence
- ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix driophila In: Flora of China. Volume 4, p. 235.
- ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Eriocladae In: Flora of China. Volume 4, p. 234.
- ↑ Salix driophila . In: The International Plant Name Index. Retrieved December 28, 2014 .
- ↑ Salix driophila . 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. 234, 235 (English).
Web links
- Salix driophila at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 28, 2014.