Salix donggouxianica

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Salix donggouxianica
Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Willow family (Salicaceae)
Genre : Willows ( Salix )
Type : Salix donggouxianica
Scientific name
Salix donggouxianica
CF catch

Salix donggouxianica is a shrub from the genus of the willow ( Salix ) with usually 3.5 to 4.5 centimeters long leaf blades . The natural range of the species is in the northeast of China .

description

Salix donggouxianica grows as a shrub up to 2 meters high with a gray-brown, smooth bark . The branches are thin, bare, yellowish and spotted black. Young twigs are yellow-green. The buds are egg-shaped and have brown-yellow, bare bud scales. The leaves have a 1.5 to 2 millimeter long, bare petiole. The leaf blade is linear-lanceolate, 3.5 to 4.5 inches long and 7 to 8 millimeters wide. The leaf margin is slightly bluntly serrated, the leaf base wedge-shaped, the leaf end pointed.

The male inflorescences are elongated to short petioles , 1 to 2 centimeters long and 6 to 7 millimeters in diameter catkins . The peduncle is short and has one or two scale-like, small leaves. The bracts are rust-red, inverted triangular, about 1 millimeter long, ciliate and shaggy hairy on the underside near the base. The end of the sheet is trimmed. Male flowers have a petiolate, about 0.3 millimeter long adaxial nectar gland . The stamens have grown together, the individual stamens have shaggy hairs at the base, the anthers are red, egg-shaped and fourfold. The female kittens are round, 1 to 2.5 centimeters long and 3.5 to 5 millimeters in diameter. The bracts are spatulate, about 1.4 millimeters long and ciliate on the underside near the base. The end of the sheet is almost trimmed. Female flowers have a short, stalk-round nectar gland about 0.4 millimeters long. The ovary is ovoid or elliptical, 1.2 to 1.5 millimeters long, pubescent and shortly stalked. One stylus is missing, the scar is lobed twice. Salix donggouxianica flowers in April, the fruits ripen in May.

Distribution and ecology

The natural range is in the Chinese province of Liaoning in Donggou County . There the species grows in the coastal plains.

Systematics

Salix donggouxianica is a species from the genus of willows ( Salix ) in the willow family (Salicaceae). There it is assigned to the Helix section . It was first scientifically described in 1984 by Fang Zhenfu in the Bulletin of Botanical Research . Synonyms of the species are not known.

Individual evidence

  1. ↑ a b c d Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix donggouxianica In: Flora of China. Volume 4, p. 272.
  2. ↑ Cheng-fu Fang, Shi-dong Zhao, Alexei K. Skvortsov: Salix Sect. Helix In: Flora of China. Volume 4, p. 267.
  3. ↑ Salix donggouxianica . In: The International Plant Name Index. Retrieved December 28, 2014 .
  4. ↑ Salix donggouxianica . In: The Plant List. Retrieved December 28, 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. 267, 272 (English).

Web links

  • Salix donggouxianica at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 28, 2014.