Rosa bracteata
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Rosa bracteata , illustration |
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| JC Wendl. |
Rosa bracteata is a plant from the genus roses ( Rosa ) within the family of the rose family (Rosaceae).
description
The Rosa bracteata grows as an evergreen climbing shrub and reaches heights of up to 6 meters. Its branches, which are heavily reinforced with hook-shaped spines, have a brown to purple-colored bark . The alternate leaves are pinnate unpaired and consist of five to eleven round and shiny leaflets .
The flowering period is from May to July. The flower stalks, bracts and calyx are covered with soft, hairy bristles. The flowers stand over several large, gray-green bracts. The relatively large, hermaphroditic flowers are 6 to 10 centimeters in diameter and have a radial symmetry , five-fold with a double flower envelope and exude a lemony scent. The five free petals are white.
From August onwards, Rosa bracteata bears round rose hips with a diameter of up to 2.5 centimeters.
Occurrence
The natural range of Rosa bracteata is in southeastern China , Taiwan and the Japanese Ryūkyū Islands . In China it thrives in mixed forests, bushes, on sandy hills, along rivers, on roadsides and on coasts at altitudes of 0 to 300 meters in the provinces of Fujian , Guizhou , Hunan , Jiangsu , Jiangxi , Yunnan .
Systematics
The first publication of Rosa bracteata was made in 1798 by Johann Christoph Wendland . Synonyms for Rosa bracteata J.C. Wendl. are: Rosa macartnea Dumont de Courset , Rosa sinica var. braamiana rule .
Varieties are:
- Rosa bracteata J.C. Wendl. var. bracteata
- Rosa bracteata var. Scabriacaulis Lindl. ex Koidzumi
Culture as an ornamental plant
Rosa bracteata was introduced to Great Britain in 1793 by the British ambassador Lord Macartney at the Chinese imperial court and is therefore also called the Macartney rose .
This wild rose is one of the climbing roses and is frost hardy to −12 ° C ( USDA zone 8 ).
Unlike many other wild rose species introduced from China in the 18th and 19th centuries, Rosa bracteate did not play a major role in rose breeding. Only the yellow flowering climbing rose 'Mermaid' has Rosa bracteate as a parent.
swell
- Gu Cuizhi & Kenneth R. Robertson: Rosa : Rosa bracteata , p. 380 - the same text online as the printed work , In: Wu Zheng-yi & Peter H. Raven (eds.): Flora of China , Volume 9 - Pittosporaceae through Connaraceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2003. ISBN 1-930723-14-8 .
Individual evidence
- ^ A b Rosa bracteata in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved July 12, 2014.
- ↑ a b c Gu Cuizhi & Kenneth R. Robertson: Rosa : Rosa bracteata , p. 380 - online with the same text as the printed work , In: Wu Zheng-yi & Peter H. Raven (eds.): Flora of China , Volume 9 - Pittosporaceae through Connaraceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2003. ISBN 1-930723-14-8
literature
- Heinrich Schultheis: Roses: the best types and varieties for the garden . Ulmer, Stuttgart 1996, ISBN 3-8001-6601-1
- Roger Phillips, Martyn Rix: Rosarium - Elmer's large rose book - The best varieties for the garden and winter garden. Verlag Eugen Ulmer, Stuttgart 2005, ISBN 3-8001-4776-9
- Agnes Pahler: Roses: the great encyclopedia; [with 2000 varieties]. Dorling Kindersley, Starnberg 2004, ISBN 3-8310-0590-7 , p. 70
