Carpinus dayongiana

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Carpinus dayongiana
Systematics
Eurosiden I
Order : Beech-like (Fagales)
Family : Birch family (Betulaceae)
Subfamily : Hazelnut family (Coryloideae)
Genre : Hornbeam ( Carpinus )
Type : Carpinus dayongiana
Scientific name
Carpinus dayongiana
KWLiu & QZLin

Carpinus dayongiana is a small tree from the subfamily of the hazelnut family (Coryloideae) with dark purple branches and shaggy, hairy leaf tops in young leaves. The natural range of the species is in China.

description

Carpinus dayongiana is a tree up to 4 meters high with gray bark . The branches are dark purple and bare. The leaves have a 5 to 7 millimeter long, downy hairy stem. The leaf blade is 2.5 to 4.5 inches long and 1 to 1.5 inches wide, lanceolate to ovate-lanceolate, long pointed, with a broad wedge-shaped to more or less rounded base and a simply bristly serrated leaf margin. 18 to 20 pairs of nerves are formed. The upper side of young leaves is shaggy hairy, the underside is shaggy hairy along the leaf veins and otherwise glabrous.

The female inflorescences are 1.4 to 2.5 inches long with a diameter of 1 to 1.2 inches. The inflorescence axis is 1.4 to 2.1 inches long, hairy thin and downy. The bracts are 5 to 8 millimeters long, about 3 to 4 millimeters wide, semi-ovate, pointed and downy hairy on top along the veins. The outer leaf margin is closely serrated, the inner part is entire with a rolled up leaf tube at the base. Four or five first-order leaf veins are formed, the reticulated veins protruding. The fruits are 2 to 3 millimeters long and 1.5 to 2.5 millimeters wide, broadly egg-shaped, clearly ribbed and, except for the shaggy, hairy tip, bare nuts . Carpinus dayongiana flowers from April to May, the fruits ripen from June to August.

Occurrence and location requirements

The natural range is in China in the former Dayong County (today the city of Zhangjiajie ) in the province of Hunan in subtropical forests at an altitude of about 1100 meters.

Systematics

Carpinus dayongiana is a species of the hornbeam genus ( Carpinus ). This is in the family of birch plants of the subfamily (Betulaceae) coryloideae assigned (Coryloideae). The species was first described scientifically in 1986 by Ke Wang Liu and Qin Zhong Lin . The genus name Carpinus comes from Latin and was already used by the Romans for the hornbeam.

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. 299 (English).

Individual evidence

  1. ↑ a b c d e Pei-chun Li, Alexei K. Skvortsov: Carpinus dayongina , in the Flora of China , Volume 4, p. 299
  2. ^ Carpinus. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed July 21, 2012 .
  3. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 130

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