Carpinus putoensis
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Carpinus putoensis |
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| Carpinus putoensis | ||||||||||||
| WCCheng |
Carpinus putoensis is a small tree from the subfamily of the hazelnut family ( Coryloideae ) with brown, sparsely shaggy twigs, sparsely shaggy hairy leaf top and sparsely downy hairy underside. The natural range of the species is on an island in China. In the wild there is only a single specimen.
description
Carpinus putoensis is a tree up to 15 meters high with brownish-gray bark . The twigs are brown and sparsely shaggy with hair. The leaves have a 5 to 10 millimeter long, sparsely downy hairy stem. The leaf blade is 5 to 10 centimeters long and 3.5 to 5 centimeters wide, elliptical or broadly elliptical, pointed or pointed, with a broad wedge-shaped to rounded base and an irregular and double-bristle serrated leaf margin. Eleven to 14 pairs of nerves are formed. The upper surface of young leaves is sparsely hairy, shaggy, the underside is sparsely hairy, especially along the midrib and the lateral pairs of nerves, and also has axillary beards.
The female inflorescences are 3 to 8 inches long with a diameter of 4 to 5 inches. The inflorescence axis is 1.5 to 3 centimeters long, sparsely shaggy hairy or balding. The bracts are 2.8 to 3 inches long, about 8 millimeters wide, half-egg-shaped with half-egg-shaped central lobes and a rounded or blunt tip. The outer leaf margin is irregular and closely serrated, the inner part is entire or more or less wavy with egg-shaped, rolled up basal lobes. Three to five leaf veins of the first order are formed, the reticulated veins are protruding. The fruits are about 6 millimeters long and 4 millimeters wide, broadly egg-shaped, clearly ribbed and, except for the shaggy, hairy tip, bare nuts . Carpinus putoensis flowers from May to June, the fruits ripen from July to September.
The number of chromosomes is 2n = 112.
Occurrence and location requirements
The natural distribution area is in China on the island of Putuo Shan in the province of Zhejiang, which belongs to the Zhoushan Islands . There the species grows in subtropical forests at heights of 200 to 300 meters. In the Red List of the IUCN is Carpinus Putoensis as Endangered ( "Critically Endangered") out. It is pointed out, however, that a new check of the risk is necessary. In the wild there is only one specimen that is fenced in on the edge of a small mixed forest on Mt. Froding.
Systematics
Carpinus putoensis 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 Wan Chun Cheng 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. 294 (English).
Individual evidence
- ↑ a b c d e Pei-chun Li, Alexei K. Skvortsov: Carpinus putoensis , in the Flora of China , Volume 4, p. 294
- ^ Carpinus putoensis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ Carpinus putoensis in the endangered Red List species the IUCN 2012. Posted by: World Conservation Monitoring Center, 1998. Accessed July 22, 2012 found.
- ^ Carpinus. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed July 22, 2012 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 130
Web links
- Carpinus putoensis. In: The Plant List. Retrieved July 22, 2012 .