Salix bhutanensis

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Salix bhutanensis
Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Willow family (Salicaceae)
Genre : Willows ( Salix )
Type : Salix bhutanensis
Scientific name
Salix bhutanensis
Flod.

Salix bhutanensis is a shrub or small tree from the genus of willow ( Salix ) with young, densely brownish green tomentose hairy twigs and 3 to 5.5 centimeters long leaf blades. The natural range of the species is in Nepal, Bhutan and Tibet .

description

Salix bhutanensis is a shrub or tree up to 3 meters high with spread branches. Young twigs are densely hairy, brownish-green, tomentose, two-year-old twigs are about 4 millimeters thick. The leaves have an approximately 3 millimeter long, densely downy-haired stem. The stipules are ovate to lanceolate, finely hairy and have a toothed leaf margin. The leaf blade is 3 to 5.5 inches long and 1.5 to 2.5 inches wide, elliptical, pointed, entire, with a blunt or rounded base. Eight to 11 pairs of nerves are formed. The upper side of the leaf is yellowish green, the underside gray-green.

Male inflorescences are unknown. The female inflorescences are cylindrical, 5 centimeters long and 1.3 centimeters diameter, dense-flowered catkins on a 1 centimeter long stalk with one to three leaves. The bracts are brown, ovate-lanceolate or lanceolate, about 1.8 millimeters long, dull brown on top and long hairy on the underside. The female flowers have an adaxial nectar gland . The ovary is stalked 0.3 to 1 millimeter long, narrow ovate-conical, 4 to 5 millimeters long, bare and upper side reddish. The stylus is 1 to 1.5 millimeters long or longer, the scar is more or less erect and two columns. The fruits are 6 to 7 millimeter long capsules . Salix bhutanensis flowers before or with the leaf shoots from May to June.

Occurrence

The natural distribution area lies on mountain slopes, in valleys, thickets and open forests in Nepal , Bhutan and Tibet at altitudes of 2800 to 3500 meters.

Systematics

Salix bhutanensis is a kind from the kind of willow ( Salix ), in the family of the pasture plants (Salicaceae). There she is assigned to the Lanatae section . It was first described scientifically in 1940 by Björn Gustaf Oscar Floderus . The generic name Salix comes from Latin and was already used by the Romans for various types of willow.

Synonyms of the species are Salix filistyla C. Wang & PY Fu and Salix himalayensis (Andersson) Floderus var. Filistyla (C. Wang & PY Fu) CF 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. 250, 251 (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 e Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix bhutanensis , in the Flora of China , Volume 4, p. 251
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Lanatae , in the Flora of China , Volume 4, p. 250
  3. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552

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