Pearl tails
| Pearl tails | ||||||||||||
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Chinese pearl tail ( Stachyurus chinensis ) |
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Stachyuraceae | ||||||||||||
| J. Agardh | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Stachyurus | ||||||||||||
| Siebold & Zucc. |
The stachyurus ( Stachyurus ), also welding ferries called, are the only plant genus of the family of Stachyuraceae . They have their areas in eastern Asia.
description
The Stachyurus species are deciduous or semi- evergreen shrubs , occasionally also small trees .
The alternate , undivided leaves are oval and at the front triangularly pointed to broadly lanceolate , in Stachyurus salicifolius narrowly lanceolate. The leaf margin is usually finely serrated, with some species also with larger blunt teeth. At the base of each leaf there are two long, pointed stipules that fall off early.
The inflorescences , which usually appear before the leaves in early spring, are typical . In each bud, in most species there is a downward-hanging, in some also upright, pearl necklace-like grape . The radially symmetrical , short-stalked, whitish to yellowish flowers are four-fold. The bell-shaped flower shell consists of four petals and four similarly shaped but smaller sepals , which each overlap far at the edges. The eight stamens are in two circles. The quadruple ovary is above. A berry with a leathery pericarp is formed.
use
The Japanese pearly tail and the Chinese pearly tail are sometimes found as ornamental plants , but mostly in botanical gardens. Otherwise the genre is completely meaningless economically.
Occurrence
All species of the genus come from East Asia, including Stachyurus praecox from Japan , the other species come from China to the Himalayas .
All species grow as undergrowth in forests or in thickets on the edge of the forest.
species
The genus consists of five to eight species, depending on the opinion, which differ mainly in the shape, texture and border of the leaves.
- Chinese pearl tail ( Stachyurus chinensis Franch. ); occurs in China at altitudes between 400 and 3000 meters
- Stachyurus cordatulus Merrill ; occurs in China in northwestern Yunnan at altitudes between 1400 and 2100 meters and in northern Myanmar
- Stachyurus himalaicus J.D. Hooker & Thomson ex Bentham ; occurs in China in Xizang and Yunnan at altitudes between 400 and 3000 meters, also in Bhutan, northern India, Myanmar and Nepal
- Stachyurus obovatus (Rehder) Handel-Mazzetti ; occurs in China at altitudes between 500 and 2000 meters
- Japanese pearl tail or "early pearl tail" ( Stachyurus praecox Sieb. & Zucc. ); comes to Japan in Honshu, Kyushu, the Ryukyu Islands, Shikoku and the Ogasawara Islands before
- Stachyurus retusus Y.C.Yang (Syn .: Stachyurus szechuanensis W.P. Fang ); occurs in Sichuan and northeastern Yunnan at altitudes between 1600 and 2500 meters
- Stachyurus salicifolius Franchet ; occurs in China in Nanchuan, Sichuan and northeastern Yunnan
- Stachyurus yunnanensis Franchet ; occurs in China between 800 and 1800 meters altitude and also in North Vietnam.
swell
- The family at the AP website. (English)
- Qiner Yang & Peter Stevens: Flora of China , Volume 13, Pages 138-140: Stachyuraceae - Online.
supporting documents
- ↑ Stachyuraceae in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved September 29, 2013.
