Chinese ash flower
| Chinese ash flower | ||||||||||||
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| Fraxinus paxiana | ||||||||||||
| Lingelsh. |
The Chinese flowering ash ( Fraxinus paxiana ) is a deciduous tree art from the genus of ash trees in the family of Oleaceae . Their natural range is in China and the Himalayas .
description
The Chinese flower ash is a small tree that reaches a height of 10 to 15 meters and is often wider than it is tall. In culture it usually grows shrubby . The branches are olive to yellow-brown and bare. The terminal buds are very large and surrounded by one or two pairs of thin, dark brown, collar-shaped scales. The inner scales are thickly brown and tomentose. The leaves are 10 to 40 centimeters long, composed and consist of seven to nine sedentary or almost sedentary leaflets . The leaflets are 5 to 18 inches long and 2 to 6 inches wide, oval to lanceolate, long and pointed with a broad wedge-shaped to rounded base. The leaf margin is notched. The upper side of the leaf is dark green and bare, the underside is only slightly hairy on young leaves. 2 to 16 pairs of nerves are formed. The petiole is 5 to 10 inches long. The white flowers are hermaphroditic and stand in large, floriferous, terminal panicles . Petals are present. The flowers appear with or after the leaves in May. The fruits are 3 to 3.5 centimeters long, oval in cross-section, winged nut fruits , the wing edge of which runs down more or less to the middle.
Distribution and ecology
The distribution area of the Chinese flower ash is in China in the provinces of Hubei , Hunan and Shaanxi and in the Himalayan region . There it thrives in steppe trees and dry forests on moderately dry to fresh, slightly acidic to alkaline, sandy-loamy to loamy, nutrient-rich soils in sunny and hot locations. It is sensitive to frost. They can be found at heights of 400 to 1100 meters.
Systematics
The Chinese flowering ash ( Fraxinus paxiana ) is a kind from the kind of ash trees ( Fraxinus ) in the family of Olive Family (Oleaceae). It is assigned to the Ornus section . In addition to the nominate form Fraxinus paxiana var. Paxiana , a distinction is made between two varieties : Fraxinus paxiana var. Depauperata Lingelsh. and Fraxinus paxiana var. sikkimensis Lingelsh. who also use the synonyms Fraxinus depauperata (Lingelsh.) Z. Wei and Fraxinus sikkimensis (Lingelsh.) Hand.-Mazz. be seen as separate species.
use
The Chinese flower ash is rarely used as an ornamental shrub because of its decorative and fragrant flowers . The bark of the flower ash finds u. a. Due to the coumarin derivatives Fraxetin and Fraxin it contains, it is used in traditional Chinese medicine .
proof
literature
- Andreas Roloff , Andreas Bärtels: Flora of the woods. Purpose, properties and use. With a winter key from Bernd Schulz. 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , pp. 310-311.
Individual evidence
- ↑ a b c Roloff et al .: Flora of the Woods , pp. 310–311
- ↑ a b Fraxinus paxiana. In: Flora of China Vol. 15. www.eFloras.org, p. 275 , accessed on December 30, 2010 (English).
- ↑ Fraxinus paxiana. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed December 30, 2010 .
- ↑ Ma, Z., Zhao, Z .: Studies on chemical constituents from stem barks of Fraxinus paxiana . In: China J. Chin. Mater. Med. Band 33 , 2008, p. 1990-1993 (English).