Carpinus tsaiana
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Carpinus tsaiana is a large tree from the genus of hornbeams ( Carpinus ) with purple-red, balding branches and leaves that are bare except for the veins, which are densely covered with point-like glands on the upper side. The natural range of the species is in China.
description
Carpinus tsaiana is a tree up to 30 meters high with cracked, gray bark . The branches are purple and bald. The leaves have an approximately 1.5 centimeter long, bare or sparsely shaggy stalk. The leaf blade is 7 to 14 centimeters long, 4.5 to 6 centimeters wide, elliptical, oblong, oblong-lanceolate or ovate-lanceolate, with a pointed end, heart-shaped or blunt heart-shaped base and an irregular, double, finely serrated leaf edge. 14 to 16 pairs of nerves are formed. The upper side of the leaf is glabrous and densely covered with point-like glands, the underside is sparsely shaggy hairy along the leaf veins and has axillary whiskers.
The female inflorescences are 10 to 14 inches long. The inflorescence axis is about 3 inches long and glabrous. The bracts are 2.5 to 3 inches long, 1.5 to 1.8 inches wide, half-ovoid wide with a pointed or pointed end. The outer leaf margin is roughly toothed to lobed without a basal lobe; the inner part has entire margins or is narrow and finely serrated with a rolled-up basal auricle . The leaves have five first-order veins. The veins arranged like a net are clearly visible. As fruits are 5 to 6 mm long, triangular, ovoid to broadly ovate significantly ribbed at the top and close villous hairy Nüsschen formed with orange resin glands. Carpinus tsaiana flowers from May to June, the fruits ripen from July to September.
Occurrence and location requirements
The natural range is in the southwest of the Chinese provinces of Guizhou and in the southeast of Yunnan . The species grows in subtropical forests at an altitude of 1200 to 1500 meters.
Systematics
Carpinus tsaiana 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 Hu Xiansu in 1948 . 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. 295 (English).
Individual evidence
- ↑ a b c d e Pei-chun Li, Alexei K. Skvortsov: Carpinus tsaiana , in the Flora of China , Volume 4, p. 295
- ^ Carpinus. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed July 30, 2012 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 130
Web links
- Carpinus tsaiana. In: The Plant List. Retrieved July 30, 2012 .