Japanese weigela
| Japanese weigela | ||||||||||||
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Flower and bud of Weigela japonica |
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| Weigela japonica | ||||||||||||
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The Japanese weigela ( Weigela japonica ) is a shrub with crimson flowers from the family of Honeysuckle (Caprifoliaceae). The natural range is in China, Korea and Japan. The species is sometimes used as an ornamental shrub.
description
The Japanese weigela is a shrub up to 6 meters high . Young twigs are bare or have two stripes of hair along the internodes . The leaves have an 8 to 12 millimeter long, downy-haired stem. The leaf blade is simple, 5 to 15 centimeters long, 3 to 8 centimeters wide, narrowly ovate to ovoid-elliptical, rarely also obovate, pointed to long-pointed, with a sawn edge and a broadly wedge-shaped to rounded base. The upper side of the leaf is intensely green and sparsely hairy. The underside is greenish and soft gray-haired entirely or only along the leaf veins .
The flowers grow individually or in threes in zymous inflorescences . The calyx is 1 to 1.2 inches wide and downy hairy. The calyx tube is 1 to 5 millimeters long, the calyx lobes are 5 to 10 millimeters long and linear. The corolla is funnel-shaped, bell-shaped, 2.5 to 3.5 centimeters long, white to reddish and turns red during flowering, sparsely hairy on the outside or almost bare. The base of the corolla tube is narrowly cylindrical and expands rapidly over the center. The corolla lobes are spread out, unevenly distributed and bare. The stamens are white, the anthers yellow-brown. The ovary is glabrous or sparsely pubescent. The stylus does not or only slightly protrudes from the corolla tube. The scar is bilobed. The fruit is 1.5 to 2 centimeters long, sparsely hairy capsules with a short beak. The seeds have narrow wings. The Japanese weigela flowers from April to May, the fruits ripen from August to September.
distribution
The natural range is in the Chinese provinces of Anhui , Fujian , Guangdong , Guangxi , Guizhou , Hubei , Hunan , Jiangxi , Sichuan and Zhejiang ; in Japan on Kyushu and in Korea . The Japanese Weigela grows in cool, moist forests and thickets at altitudes of 400 to 1800 meters on well-drained, fresh to moist, acidic to neutral, sandy or gravelly humus, moderately nutrient-rich soils in sunny to light-shaded, summer-cool and winter-cold locations. The species is frost hardy . Higher lime content in the soil is not tolerated.
Systematics
Japanese Weigelie ( Weigela japonica ) is a kind of the genus of Weigela ( Weigela ) in the family of Honeysuckle (Caprifoliaceae). There the genus is assigned to the subfamily Diervilloideae . The species was first scientifically described by Carl Peter Thunberg in 1780 . The generic name Weigela is reminiscent of Christian Ehrenfried Weigel (1746–1831), a German doctor, chemist and pharmacist who came from Stralsund , which was still in Sweden at the time , and who was also the Royal Swedish Personal Physician for a time. The specific epithet japonica refers to the distribution area in Japan.
Representatives from China are often described as a separate variety Weigela japonica var. Sinica (Rehder) Bailey . They differed from plants from Japan and Korea in the shape of the corolla by the longer cylindrical part of the corolla tube.
use
The Japanese weigela is sometimes used as an ornamental shrub because of its decorative flowers .
proof
literature
- Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 19: Cucurbitaceae through Valerianaceae, with Annonaceae and Berberidaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2011, ISBN 978-1-935641-04-9 , pp. 282 (English).
- 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 , p. 683.
- Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 872 .
- Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).
Individual evidence
- ↑ German name after Roloff et al .: Flora der Gehölze , p. 683 and after Fitschen: Gehölzflora , p. 872
- ↑ a b c d Roloff et al .: Flora der Gehölze , p. 683
- ↑ a b c d Qiner Yang, Fred R. Barrie, Charles D. Bell: Weigela japonica , in the Flora of China , Volume 19, p. 615
- ↑ a b c Weigela japonica. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed July 18, 2012 .
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 692
- ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 313
Web links
- Weigela japonica. In: The Plant List. Retrieved July 18, 2012 .
- Thomas Meyer: Weigelie data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )