Salix cathayana

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Salix cathayana
Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Willow family (Salicaceae)
Genre : Willows ( Salix )
Type : Salix cathayana
Scientific name
Salix cathayana
Diels

Salix cathayana is a strongly branched shrub from the genus of the willow ( Salix ) with brown or gray-brown, young tomentose hairy branches. The leaf blades have lengths of 1.5 to 5.2 centimeters. The natural range of the species is in the north of China.

description

Salix cathayana is a strongly branched shrub up to 1.5 meters high . The twigs are brown or gray-brown, young twigs are tomentose. The buds are ovate to elongated, tomentose and have a blunt tip. The leaves have a 2 to 5 millimeter long, finely haired petiole. The leaf blade is elliptical or elliptical-lanceolate, 1.5 to 5.2 inches long and 0.6 to 1.5 inches wide, entire, with a blunt or pointed tip and a blunt or pointed base. The upper side of the leaf is dull green and sometimes tomentose, the underside is blue-green.

The male inflorescences are 2 to 3.5 centimeters long and 5 to 8 millimeters in diameter, dense-flowered catkins . The peduncle is 0.5 to 1.5 centimeters long, shaggy and hairy and forms three or more leaves. The bracts are yellowish brown, ovate or obovate, ciliate and have a rounded tip. Male flowers have an adaxial , ovoid-elongated nectar gland . The two stamens are free, the stamens are three to four times longer than the bracts and sometimes sparsely hairy with long downy hair. The anthers are yellow, egg-shaped or almost round. The female kittens are 2 to 3 seldom up to 5 centimeters long, dense-flowered and short-stalked. The bracts are obovate-oblong and ciliate. Female flowers have an adaxial nectar gland. The ovary is elliptical, about 3 millimeters long, glabrous and sessile. The pen is short and two columns, the scar is short and bilobed. Round, sedentary or almost sedentary capsules are formed as fruits . Salix cathayana flowers in May, the fruits ripen in June and July.

Occurrence

The natural range is in the Chinese provinces of Guizhou , Hebei , Henan , Hubei , Shaanxi , Sichuan and Yunnan . It grows in thickets on mountain slopes and in valleys at altitudes of 1800 to 3000 meters.

Systematics

Salix cathayana is a species from the genus of willows ( Salix ) in the willow family (Salicaceae). There it is assigned to the Denticulatae section . It was first scientifically described by Ludwig Diels in 1912 . The generic name Salix comes from Latin and was already used by the Romans for various types of willow. The specific epithet cathayana refers to the origin of the species from China. It is derived from Cathay , an empire established in the 10th century by Mongol tribes in northern China.

A synonym of the species is Salix hsinhsuaniana Fang.

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. 195, 205 (English).
  • Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 , pp. 135, 552 (reprint from 1996).

Individual evidence

  1. ↑ a b c d e f Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix cathayana , in the Flora of China , Volume 4, p. 205
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Denticulatae , in the Flora of China , Volume 4, p. 195
  3. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552
  4. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 135

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