Salix austrotibetica

from Wikipedia, the free encyclopedia
Salix austrotibetica
Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Willow family (Salicaceae)
Genre : Willows ( Salix )
Type : Salix austrotibetica
Scientific name
Salix austrotibetica
N.Chao

Salix austrotibetica is a small shrub from the genus of the willow ( Salix ) with up to 4.5 centimeters long, initially shaggy, hairy leaf blades on both sides. The natural range of the species is in Tibet .

description

Salix austrotibetica is a shrub up to 1.5 meters high with initially sparsely hairy white shaggy branches that later become bald. The buds are bare. The leaves have a 2 to 6 millimeter long, initially shaggy stalk. The leaf blade is 1.5 to 4.5 inches long, 0.6 to 1.8 inches wide, long obovate-elliptical, with a pointed or blunt tip, narrowed leaf base and entire or irregularly serrated leaf margin. The upper side of the leaf is green, the underside is pale and frosted. Both sides are initially hairy and shed later. About five pairs of nerves are formed.

The inflorescences are 2.5 to 3.5 centimeters long catkins with a bare or almost bare inflorescence axis. The bracts are about 2.5 millimeters long, obovate-elliptical, ciliate with a rounded or almost truncated tip. Male flowers have two linear nectar glands , the adaxial one is slightly longer than the abaxial one. The two stamens are about 4 millimeters long, bare and ingrown. Female flowers have an adaxially located, linear nectar gland. The 0.5 millimeter long stalked ovary is 2.5 millimeters long, elliptical, glabrous and white with frost. The stylus is 1.5 millimeters long, reddish and has two columns. The scar is bilobed. Salix austrotibetica flowers in August.

Occurrence and location requirements

The natural range is on mountain slopes at an altitude of about 3300 meters in the east of Tibet .

Systematics

Salix austrotibetica is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There it is assigned to the Denticulatae section . It was first scientifically described by Neng Chao in 1980 . 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. 195, 206 (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

  1. ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix austrotibetica , in the Flora of China , Volume 4, p. 206
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Denticulatae , in the Flora of China , Volume 4, p. 234
  3. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552

Web links