Salix argyrophegga
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Salix argyrophegga is a shrub or tree from the genus of willow ( Salix ) with up to 11 centimeters long leaf blades with a gray shaggy hairy top. The natural range of the species is in China.
description
Salix argyrophegga is a shrub or tree . Young twigs are hairy gray and shaggy and bald after two years. The buds are hairy shaggy. The stipules are 4 to 5 millimeters long, egg-shaped, elliptical or semi-heart-shaped, pointed with a glandular serrate edge and a gray, shaggy, hairy leaf surface. The leaves have a finely hairy petiole about 5 to 15 millimeters long. The leaf blade is 3 to 11 centimeters long, 2 to 2.5 centimeters wide, elliptical, obovate-elliptical or elongated, pointed, short pointed or blunt, with a wedge-shaped, rounded or almost heart-shaped leaf base and glandularly serrated leaf margin, which is rarely almost entire. The upper side of the leaf is hairy with gray shaggy hair, the underside gray or yellowish tomentose hairy and balding.
As inflorescences , 7 to 8 mm measured by 4 to 8 centimeters long kitten formed. The inflorescence stalk is 2 to 4 inches long, shaggy and hairy and has several leaflets. The inflorescence axis is hairy shaggy. The bracts are hairy shaggy, about 1 millimeter long, ovate-rounded, with a rounded tip. Male flowers have an adaxial and an abaxial nectar gland and two stamens . The catkins are up to 14 centimeters long. Female flowers have a 1 millimeter long, elongated, adaxially located nectar gland. The ovary is sessile and hairy shaggy. The stylus is striking and two columns, the scar is bilobed. The fruits are 5 to 6 millimeters long, ovoid-elliptical and finely hairy capsules . Salix argyrophegga flowers from April to May when the leaves shoot, the fruits ripen from June to August.
Occurrence and location requirements
The natural range is on mountain slopes and in thickets at 2100 to 3000 meters altitude in the west of the Chinese province of Sichuan and in the east of Tibet .
Systematics
Salix argyrophegga is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There it is assigned to the Psilostigmatae section . It was first described scientifically in 1916 by Camillo Karl Schneider . A synonym of the species is Salix wenchuanica Goerz. 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. 231 (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 argyrophegga , in the Flora of China , Volume 4, p. 231
- ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Psilostigmatae , in the Flora of China , Volume 4, p. 234
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552
Web links
- Salix argyrophegga . In:The Plant List. Retrieved August 17, 2012.