Lovely Weigela ( Weigela florida )
The plant genus Weigelien ( Weigela , Syn .: Weigelia ) belongs to the subfamily Diervilloideae in the family of the honeysuckle (Caprifoliaceae). The genus Weigela ( Weigela ) contains about ten species. The number of varieties is estimated at 150 to 200, which are used as ornamental trees in parks and gardens.
Appearance and leaves
Weigelia species are deciduous shrubs . The young twigs are slightly angular and have bark with different downy hairs .
The against-constantly arranged on the branches leaves are stalked or subsessile. The simple leaf blade has serrated leaf margins. Stipules are absent. The winter buds have several bud scales.
Inflorescences and flowers
The inflorescences can be arranged terminally on the branches, in the leaf axils or on short side branches. Most are two to six flowers in a zymösen inflorescence together or blooms stand individually.
The hermaphrodite flowers are five-fold with a double flower envelope . The five sepals are fused at their base or at most up to the middle of their length to form a narrow, cylindrical tube that ends with five sepals . The five petals fused together like a bell or funnel, the corolla tube being narrow at its base and suddenly widening. The five crown lobes are just almost the same. The color of the petals is white, pink to carmine red (light yellow in Weigela middendorfiana ). The five stamens are fused with this up to the middle of the corolla tube, depending on the type they look a little out of the flower tube or are located at the top of its hem. The lower ovary is two-chambered. The slender stylus ends in a round or two-part stigma and protrudes far out of the flower tube.
Fruits and seeds
The leathery or woody capsule fruits contain numerous small seeds. The seeds are wingless or have narrow wings.
Systematics and distribution
The genus Weigela was established by Carl Peter Thunberg in 1780 . The generic name Weigela honors the German-Swedish doctor, botanist and chemist Christian Ehrenfried von Weigel (1748 - 1831). The closest related genus is Diervilla , with which it forms the subfamily Diervilloideae.
Weigelias are common in northeast Asia , Japan, Korea, China and in the far east of Russia.
There are about ten species in the genus Weigela
- Weigela coraeensis Thunb. ( Syn .: Diervilla coraeensis (Thunb.) DC. , Diervilla coraeensis f. Alba Voss , Weigela coraeensis f. Alba (Voss) Rehder ): It occurs only in the eastern-central part of the Japanese island of Honshu .
- Nikko Weigelie ( Weigela decora (Nakai) Nakai , Syn .: Diervilla decora Nakai ): It occurs only on the Japanese islands of Honshu, Kyushu and Shikoku .
- Rich-flowered Weigela ( Weigela floribunda (Sieb. & Zucc.) K.Koch , Syn .: Diervilla floribunda Sieb. & Zucc. , Weigela floribunda var. Versicolor auct.): It occurs only on the Japanese islands of southern Honshu and Shikoku.
- Lovely Weigela ( Weigela florida (Bunge) A.DC. , Syn .: Calysphyrum floridum Bunge , Diervilla florida (Bunge) Sieb. & Zucc. Weigela pauciflora DC. , Weigela rosea Lindl. ): It is in Japan , Korea and in the Chinese provinces of Hebei (unsafe), Heilongjiang, Henan, northern Jiangsu, Jilin, Liaoning, Nei Mongol, Shaanxi, northern Shandong and Shanxi.
- Garden Weigela ( Weigela hortensis (Sieb. & Zucc.) K.Koch , Syn .: Diervilla hortensis Siebold & Zucc. ): It occurs only on the Japanese islands of Honshu and Hokkaidō .
- Japanese Weigela ( Weigela japonica Thunb. , Syn .: Diervilla floribunda var. Versicolor (Sieb. & Zucc.) Rehder , Diervilla japonica (Thunb.) DC. , Diervilla versicolor Sieb. & Zucc. ): It is in China, Japan and Korea widespread.
- Maximowicz's Weigelie ( Weigela maximowiczii (S.Moore) Rehder , Syn .: Calyptrostigma maximowiczii (S.Moore) Makino , Diervilla maximowiczii (S.Moore) Makino , Diervilla middendorffiana var. Maximowiczii S.Moore ): It only occurs on the Japanese island Honshu before.
- Gold Weigela ( Weigela middendorffiana (Carrière) K. Koch , Syn .: Diervilla middendorffiana Carrière ): It is common on the Japanese islands of Hokkaidō and northern Honshu and in Russia's Far East .
- Weigela praecox (Lemoine) L H.Bailey : It occurs in North Korea and Russia's Far East.
- Weigela subsessilis (Nakai) LHBailey (Syn .: Diervilla subsessilis Nakai ): The home is Korea.
Use and horticultural history
Weigelia are widely cultivated as ornamental trees. Weigela florida was introduced by Robert Fortune in 1845 . There are numerous varieties that usually reach a height of around 2 meters. They are not demanding of the soil and can endure exhaust fumes and urban climates. Flowering time is early summer, often a weaker re-flowering occurs later. Cutting back immediately after flowering prevents the bushes from aging early.
There is currently a well-known, large exhibition collection in Europe:
- Sheffield - there in the National Plant Collection of the Botanical Gardens
- Augustin-Pyrame de Candolle : Note sur le genre Weigelia de Thunberg. Geneva 1839.
- Herbert Ewe: Weigelien shrub named after a Sundstädter: Christian Ehrenfried Weigel; famous botanist and popular professor. In: Ostsee-Zeitung. Vol. 46 (1998), 133 (June 11, 1998), p. 16.
- ↑ a b c d e f g h i Qiner Yang, Fred R. Barrie, Charles D. Bell: Diervillaceae : Weigela Thunberg , p. 615 , In: Flora of China Editorial Committee: Wu Zhengyi, Peter H. Raven, Hong Deyuan : Flora of China - Cucurbitaceae through Valerianaceae with Annonaceae and Berberidaceae , Volume 19, Science Press and Missouri Botanical Garden Press, Beijing and St. Luis, March 9, 2011. ISBN 978-1-930723-99-3 (same text as printed work - Full text online - section description, systematics, there is written about 10 species, and distribution)
- ↑ In: Kongl. Vetensk. Acad. Nya Handl. 1, 1780, p. 137, plate 5.
- ↑ Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. 
- ↑ a b Flora of Japan ( Memento of the original from December 8, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c d e f g h Entry in GRIN Taxonomy for Plants.
- ↑ J. Kelly, J. Hillier (Eds.): The Hillier Trees & Shrubs . Thalacker, Braunschweig 1997, ISBN 3-87815-086-5 , p. 622-624 .