Salix crenata
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| KS Hao ex CF Fang & AK Skvortsov |
Salix crenata is a cushion-shaped growing shrub from the genus of the willow ( Salix ) with about 8 millimeter long leaf blades . The natural range of the species is in China.
description
Salix crenata is a cushion-shaped shrub. The trunk is dull brown, short, twisted and can take root. The twigs are yellowish brown, young twigs are short but very densely arranged. Young shoots are sparsely hairy and later balding. The vegetative buds are egg-shaped, small and hairless. The leaves grow close together and cover the branches. The petiole is about 4 millimeters long. The leathery leaf blade is ovate, about 8 millimeters long and usually 3.5, rarely up to 5 millimeters wide. The leaf edge is loosely but regularly serrated in a glandular manner, the leaf base is wedge-shaped, the tip rounded. The upper side of the leaf is green, glossy, glabrous and wrinkled, the underside is greenish and initially shaggy with hair. The central rib is sunk on the top and raised on the bottom.
Very small catkins are formed as inflorescences from around five flowers. The bracts are yellowish green, obovate, membranous, and hairy on the upper side near the base along the leaf margin. The tip of the leaf is rounded. Male flowers have a cylindrical nectar gland adaxial and abaxial , the abaxial gland is thinner and sometimes bilobed. The two stamens are about 3.5 millimeters long and thus about 3 times longer than the bracts. The stamens are hairy at the base, the anthers are yellow. Female flowers have an adaxially lying, cylindrical nectar gland. The ovary is cylindrical, about 3 millimeters long, stalked long and about the same length as the bracts. The pen is short and two-piece, the scar is bilobed. The capsule fruits are long ovate. Salix crenata flowers in July, the fruits ripen in August and September.
Occurrence
The natural range is in the northwest of the Chinese province of Yunnan and in the Tibet Autonomous Region . Salix crenata grows in thickets and in crevices at altitudes of 4300 to 4800 meters.
Systematics
Salix crenata is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There she is assigned to the Lindleyanae section . It was not scientifically described until 1998 by Fang Zhenfu and Alexei Konstantinowitsch Skworzow in Novon , the description being based on an invalid one by Hao Jingsheng . No synonyms are known. The generic name Salix comes from Latin and was already used by the Romans for various types of willow. The specific epithet crenata also comes from Latin and means "notched".
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. 211, 214 (English).
- Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 , pp. 183, 552 (reprint from 1996).
Individual evidence
- ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix crenata , in the Flora of China , Volume 4, p. 214
- ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Lindleyanae , in Flora of China , Volume 4, p. 211
- ^ Salix crenata . In: The International Plant Name Index. Retrieved January 2, 2014 .
- ^ Salix crenata . In: The Plant List. Retrieved January 2, 2014 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 183
Web links
- Salix crenata at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed January 2, 2014.