Salix balansae

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

Salix balansae is a small tree from the genus of willow ( Salix ) with up to 9 leaves, rarely also 18 centimeters long, bare on both sides. The natural range of the species is in Vietnam and China.

description

Salix balansae is a tree up to 5 meters high with brown and bare annual branches. The buds are bare and have abaxially erect bud scales. The leaves have a bare stalk about 1.3 centimeters long. The leaf blade is 4 to 9 inches long and 2.5 to 3 inches wide. On strong shoots, lengths of up to 18 centimeters are rarely reached. The blade is ovate-lanceolate, with a long pointed or tail tip, rounded or almost wedge-shaped leaf base and entire or glandular serrated leaf margin. The upper side of the leaf is green and shiny, the underside is green or glauk , both sides are glabrous.

Male inflorescences are not known. The female inflorescences are catkins about 13 centimeters long with the stem . The stalk is soft and has two to three leaflets, the inflorescence axis is glabrous. The bracts are ovate, blunt, brown and glabrous. Female flowers have a nectar gland . The ovary is long stalked and pointed. The stylus is inconspicuous, the scar short and rarely bilobed. Egg-shaped, bare and pointed capsules are formed as fruits .

Occurrence and location requirements

The natural range is on river banks in Vietnam, in the Chinese autonomous region of Guangxi and in the south of the Chinese province of Hunan .

Systematics

Salix balansae is a species from the genus of willows ( Salix ) in the willow family (Salicaceae). There she is assigned to the Wilsonia section . It was first described scientifically in 1897 by Karl Otto von Seemen . The generic name Salix comes from Latin and was already used by the Romans for various types of willow.

A distinction is made between two varieties:

  • Salix balansae var. Balansae with ovate, bare bracts
  • Salix balansae var. Hunanensis N. Chao with elongated bracts that are partly hairy on top

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. 171, 174 (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 balansae (" balansaei ") , in the Flora of China , Volume 4, p. 174
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Wilsonia , in the Flora of China , Volume 4, p. 171
  3. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 552

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