Salix dalungensis

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Salix dalungensis
Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Willow family (Salicaceae)
Genre : Willows ( Salix )
Type : Salix dalungensis
Scientific name
Salix dalungensis
Z.Wang & PYFu

Salix dalungensis is a small tree from the genus of willows ( Salix ) with mostly 4 to 5 centimeters long leaf blades . The natural range of the species is in Tibet in the People's Republic of China .

description

Salix dalungensis grows as a tree up to 5 meters high . The twigs are initially dark purple, densely hairy and have protruding nodes . The leaves have a down to 8 millimeters long, downy hairy petiole. The leaf blade is elliptical, 4 to 5 inches long and 1.4 to 2 inches wide. The leaf margin is entire, the leaf base is rounded or almost rounded, rarely wedge-shaped, the end of the leaf is blunt, almost rounded or rarely almost pointed. The upper side of the leaf is finely hairy or at least finely hairy along the veins. The underside is densely short and hairy silky.

Male inflorescences are not described. Female kittens are densely flowered, about 2 inches long and 3 millimeters in diameter. The peduncle is about 5 millimeters long and has two or three small leaves. The inflorescence axis is hairy shaggy. The bracts are elliptical to obovate, about 2 millimeters long, sparsely shaggy hairy or almost bare on the underside towards the rounded tip. Female flowers have a linear-elongated adaxial nectar gland that reaches about a quarter to a third of the length of the bracts. The ovary is approximately 4 millimeters long, villous hairy and seated, the stylus is about 0.5 millimeters long and two-lobed, the scar is divided. Salix dalungensis flowers in June.

Distribution and ecology

The natural range is in the Tibet Autonomous Region at an altitude of about 4400 meters. There the species grows on mountain slopes. It is also cultivated in various places.

Systematics

Salix dalungensis is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There it is assigned to the Sclerophyllae section . It was scientifically described in 1974 by Wang Zhan and Fu Pei Yun in the Acta Phytotaxonomica Sinica . Synonyms are not known.

Individual evidence

  1. ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix dalungensis In: Flora of China. Volume 4, p. 225.
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Sclerophyllae In: Flora of China. Volume 4, p. 218.
  3. ↑ Salix dalungensis . In: The International Plant Name Index. Retrieved December 27, 2014 .
  4. ↑ Salix dalungensis . In: The Plant List. Retrieved December 27, 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. 218, 225 (English).

Web links

  • Salix dalungensis at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 27, 2014.