Carpinus tientaiensis
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Carpinus tientaiensis is a medium-sized tree from the genus of hornbeams ( Carpinus ) with yellow-brown, initially finely haired branches and leaves that are bare except for the veins. The natural range of the species is in China.
description
Carpinus tientaiensis is a 16 to 20 meter high tree with smooth, gray bark . The twigs are yellow-brown, finely hairy in the first year and balding in the second year. The leaves have a stalk that is 0.8 to 1.5 centimeters long and thickly shaggy along the furrow. The almost leathery leaf blade is 5 to 10 centimeters long, 3 to 5.5 centimeters wide, ovate or elliptical, rarely ovoid-lanceolate, with a pointed or seldom pointed end, a more or less heart-shaped to rounded base and a double and bluntly serrated leaf margin. Twelve to 15 pairs of nerves are formed. The upper side of the leaf is finely hairy along the midrib, otherwise glabrous, the underside is shaggy hairy along the veins, has axillary whiskers and is otherwise bald.
The female inflorescences are 5 to 10 inches long. The inflorescence axis is about 2.5 inches long and initially dense shaggy hair. The bracts overlap somewhat, are 2.5 to 3 centimeters long, 0.7 to 0.8 centimeters wide, three-lobed with a blunt, rarely pointed end and sparsely downy-haired along the leaf veins. The middle lobe is oblique or straight elongated or lanceolate. The outer leaf margin is bluntly serrated with an egg-shaped, one to three-toothed basal lobe; the inner part is entire or more or less undulating, with an egg-shaped, entire basal lobe, which is slightly smaller than that on the outer leaf margin. The leaves have five to seven veins of the first order. There are cores arranged like a network. When fruits are 5 to 7 millimeters long, 4.5 to 5.5 millimeters wide, broadly ovate or triangular-ovate, seven- to eleven-fold ribbed and shaggy hairy at the top Nüsschen formed. Carpinus tientaiensis flowers from April to June, the fruits ripen from July to August.
Occurrence and location requirements
The natural range is in the northwest of the Chinese provinces of Zhejiang . The species grows in forests on mountain slopes at an altitude of 800 to 1000 meters.
Systematics
Carpinus tientaiensis 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 scientifically described by Zheng Wanjun in 1932 . 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. 292 (English).
Individual evidence
- ↑ a b c d e Pei-chun Li, Alexei K. Skvortsov: Carpinus tientaiensis , in the Flora of China , Volume 4, p. 292
- ^ Carpinus. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed July 28, 2012 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 130
Web links
- Carpinus tientaiensis. In: The Plant List. Retrieved July 28, 2012 .