Beautiful elms
| Beautiful elms | ||||||||||||
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Polygonal beautiful elm ( Euptelea polyandra ), illustration |
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Eupteleaceae | ||||||||||||
| K.Wilh. | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Euptelea | ||||||||||||
| Siebold & Zucc. |
The beautiful elms ( Euptelea ) are the only genus of the plant family of the beautiful elm family (Eupteleaceae). There are only two types in Asia.
description
Vegetative characteristics
Beautiful elm species are deciduous shrubs or small trees . The bark of the branches is smooth.
The leaves are arranged in a spiral on the branches and are divided into a petiole and a leaf blade. The simple leaf blades are pinnate and sharply serrate on the edge. There are no stipules.
Generative characteristics
Six to twelve of the inconspicuous flowers are formed in inflorescences in the spring before the leaves shoot . The flowers are hermaphroditic and reduced (wind pollinated). There are no bracts . In each flower there are 6 to 19 stamens and 8 to 31 free, upper carpels .
A few stalked wing nuts (samara) stand together in an infructescence. There is an abundance of oily endosperm. The embryo is relatively small.
The number of chromosomes for both species is 2n = 28.
ecology
The pollination is carried by the wind.
Euptelea polyandra serves as food for the larvae of some butterfly species ( Lepidoptera ), including the serrated cortex tensioner ( Ectropis crepuscularia ).
Systematics and distribution
The genus Euptelea was established in 1835 by Philipp Franz von Siebold and Joseph Gerhard Zuccarini .
It is common in Asia.
There are only two species in the genus beautiful elm ( Euptelea ):
- Franchets beautiful elm ( Euptelea pleiosperma Hook.f. & Thomson , Syn .: Euptelea davidiana Baillon , Euptelea delavayi Tieghem , Euptelea franchetii Tieghem , Euptelea minor Ching ): It is in the Himalayas : Bhutan , northeastern India ( Assam ); south-eastern Tibet and in the Chinese provinces of southern Anhui , southern Gansu , Guizhou , southwestern Hebei , western Henan , Hubei , Hunan , eastern Jiangxi , southern Shaanxi , southern Shanxi , Sichuan , northern and eastern Yunnan, and northwestern Zhejiang .
- Multi-male beautiful elm ( Euptelea polyandra Siebold & Zucc. ): It occurs on the Japanese islands of Honshū , Shikoku and Kyushu .
use
The polygonal beautiful elm ( Euptelea polyandra ) has many stamens (name!). This tree reaches a height of 6 to 8 meters. It has fresh green leaves, sometimes tinged with pink at the leaf tip; they turn beautiful yellow and red in autumn. This species has a particularly good effect as an ornamental wood as a solitary plant.
In China, the leaves are eaten with oil and salt.
swell
- The family of Eupteleaceae in APWebsite . (engl.)
- The Eupteleaceae family at Delta . (engl.)
- Dezhi Fu, Peter K. Endress: Die Familie der Eupteleaceae, p. 123 - online with the same text as the printed work , In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (ed.): Flora of China. Volume 6: Caryophyllaceae through Lardizabalaceae. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2001, ISBN 1-930723-05-9 .
Individual evidence
- ↑ a b c d Dezhi Fu, Peter K. Endress: Die Familie der Eupteleaceae, p. 123 - online with the same text as the printed work , In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (ed.): Flora of China. Volume 6: Caryophyllaceae through Lardizabalaceae. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2001, ISBN 1-930723-05-9 .
- ↑ Euptelea at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ Description in Siebold & Zuccarini 1835. (Latin)
