Ostrya trichocarpa

from Wikipedia, the free encyclopedia
Ostrya trichocarpa
Systematics
Eurosiden I
Order : Beech-like (Fagales)
Family : Birch family (Betulaceae)
Subfamily : Hazelnut family (Coryloideae)
Genre : Hop beech ( Ostrya )
Type : Ostrya trichocarpa
Scientific name
Ostrya trichocarpa
D.Fang & YSWang

Ostrya trichocarpa is a tree belonging to the genus Hop Beech ( Ostrya ). The natural range of the species is in China .

description

Ostrya trichocarpa is a tree up to 18 meters high with gray-brown bark . Young twigs are reddish brown and dense, yellow and finely hairy. The leaves have a 3 to 5 millimeter long, densely yellow-brown and finely haired stem. The leaf blade is 5 to 10.5 centimeters long and 2.5 to 5 centimeters wide, ovate to ovate-elliptical, long pointed, with a more or less heart-shaped base and an irregularly double-bristle serrated leaf margin. 14 to 20 pairs of nerves are formed at a distance of 5 millimeters. The underside of the leaf is gray-green and densely hairy, the top is sparsely hairy to bald.

Female inflorescences are dense racemose and 4.5 to 8 inches long with a diameter of 2 to 3 inches. The inflorescence axis is densely hairy yellow-brown. The bracts are 1.5 to 2.4 centimeters long, 1 to 1.5 centimeters wide, elliptical, sack-shaped, pointed, with a rounded base and bristly leaf margin, membranous, network-nerved and sparsely hairy. The nuts are light brown, 5.5 to 9 millimeters long with a diameter of 2.5 to 3.5 millimeters, obovate, indistinctly ribbed and densely hairy. The flower shell remains until the fruit is ripe. It is 1.5 to 5 times as long as the nut, densely hairy and toothed at the tip. Ostrya trichocarpa flowers from April to May, the fruits ripen from June to August.

Occurrence and endangerment

The natural range of the species is in China in the southwest of the Guangxi Autonomous Region . Ostrya trichocarpa grows there in subtropical forests in limestone mountains at heights of 800 to 1300 meters.

Systematics

Ostrya trichocarpa is a species of the hop beech genus ( Ostrya ). This is in the family of birch plants of the subfamily (Betulaceae) coryloideae assigned (Coryloideae). The species was first described scientifically in 1983 by Ding Fang and Yu Sheng Wang . The generic name Ostrya comes from Latin and was already used by the Romans for the hop beech. The specific epithet trichocarpa comes from the Greek, thrix means "hair" and karpos "fruit" and thus refers to the densely hairy fruits.

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. 301 (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 Pei-chun Li, Alexei K. Skvortsov: Ostrya trichocarpa. In: Flora of China. Volume 4, p. 301.
  2. ↑ Ostrya. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed June 3, 2012 .
  3. ↑ To be precise: Etymological dictionary of botanical plant names. 2005, pp. 446-447.
  4. ↑ To be precise: Etymological dictionary of botanical plant names. 2005, p. 653.

Web links