Salix calyculata

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Salix calyculata
Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Willow family (Salicaceae)
Genre : Willows ( Salix )
Type : Salix calyculata
Scientific name
Salix calyculata
Hook.f. ex Andersson

Salix calyculata is a low shrub from the genus of willow ( Salix ) with mostly 8 to 15 millimeter long leaf blades. The natural range of the species is in China, Sikkim and Bhutan . A distinction is made between two varieties.

description

Salix calyculata is a low shrub with slightly upright branches. The leaves have a stalk about 2 to 5 millimeters long. The leaf blade is spatulate-egg-shaped, rarely from 5, mostly 8 to 15 millimeters long and from 5 mostly 6 to 9 millimeters wide, with a rounded tip, wedge-shaped base and a notched leaf edge. The upper side of the leaf is green and bare, the underside whitish and initially finely hairy.

Male inflorescences are broadly elliptical catkins with glabrous, tongue-shaped-obovate bracts . Female kittens are elliptical, the bracts resemble those of the male kittens. The female flowers have an adaxial nectar gland . The ovary is elliptical, slightly obovate or ovate and bare. The fruits are bare capsules .

Occurrence

The natural distribution area is in the south of Tibet , in the northwest of the Chinese province of Yunnan , in Bhutan and in Sikkim on gravelly underground or in rock crevices. In China, the species is found at altitudes of 3400 to 4700 meters.

Systematics

Salix calyculata is a species from the genus of willows ( Salix ) in the willow family (Salicaceae). There she is assigned to the Lindleyanae section . It was in 1860 by Joseph Dalton Hooker scientifically valid first described , a former but not recognized description comes from Nils Johan Andersson . The generic name Salix comes from Latin and was already used by the Romans for various types of willow. The specific epithet calyculata is derived from the Latin expression caliculus , a diminutive of calix and means "small calyx ".

There are two varieties :

  • Salix calyculata var. Calyculata with 8 to 15 millimeters long and 6 to 9 millimeters wide leaf blades. The ovary is elliptical or slightly obovate. The stalk of the ovary is longer than the ovary itself. The variety grows on gravel-laden soil in Bhutan, Sikkim and southern Tibet. A synonym for the variety is Salix calyculata var. Glabrifolia Handel-Mazzetti .
  • Salix calyculata var. Gongshanica C.Wang & CFFang length of 5 to 12 mm and 5 to 8 mm wide leaf blades and an egg-shaped ovary. The stem is shorter than the ovary. The variety grows in crevices at altitudes of 4100 to 4700 meters in northwestern Yunnan.

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, 213, 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. 119, 120, 552 (reprint from 1996).

Individual evidence

  1. ↑ a b c d e Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix calyculata , in the Flora of China , Volume 4, p. 213
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Lindleyanae , in Flora of China , Volume 4, p. 211
  3. ^ Salix calyculata . In: Tropicos. Retrieved September 16, 2012 .
  4. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552
  5. ↑ Exactly: Etymological Dictionary of Botanical Plant Names, pp. 119–120
  6. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix calyculata var. Calyculata , in the Flora of China , Volume 4, p. 214
  7. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix calyculata var. Gongshanica , in the Flora of China , Volume 4, p. 214

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