Ash rose
| Ash rose | ||||||||||||
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Ash rose ( Rosa blanda ) |
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| Aiton |
The ash rose ( Rosa blanda ), also called labrador rose , meadow rose or ash-leaved rose , is a species of plant from the genus roses ( Rosa ) within the rose family (Rosaceae).
description
Rosa blanda forms a shrub that can reach heights of up to 2 meters. The smooth, long branches have only a few spines at the base. The imparipinnate leaves are 2 to 5 centimeters long and consist of five to seven elongated oval leaflets . The flowering period begins early - from May. The flowers are individually or up to six in clusters. The slightly fragrant, hermaphrodite flowers are up to 5 centimeters in diameter and are radially symmetrical with a double flower envelope . The petals are bright pink. The relatively large rose hips are bright red when ripe.
The number of chromosomes is 2n = 14.
Occurrence
The original range of Rosa blanda is in eastern and central North America . This wild rose is frost hardy down to −29 ° C ( USDA zone 5 ).
Systematics
The first publication of Rosa blanda was in 1789 by William Aiton . Rosa blanda is the North American relative of Rosa majalis, which is native to Europe .
Of Rosa blanda several varieties have been described (selection):
- Rosa blanda Aiton var. Blanda
- Rosa blanda var. Glabra
- Rosa blanda var. Hispida
use
Rosa blanda was used by the Hungarian rose breeder Rudolf Geschwind at the end of the 19th century along with Rosa arkansana , Rosa acicularis and other wild roses to breed a group of robust and particularly hardy "Nordland roses". In the United States, Rosa blanda was used to grow a "thornless" rose.
literature
- Charles Quest-Ritson, Brigid Quest-Ritson: Roses: the great encyclopedia The Royal Horticultural Society, translation by Susanne Bonn; Starnberg: Dorling Kindersley, 2004, page 64, ISBN 3-8310-0590-7
Individual evidence
- ↑ Labrador Rose. In: FloraWeb.de.
- ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 566.
Web links
- World of roses .
- USDA plant database
- Rosa blanda on the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
- Rosa blanda at Plants For A Future
- Distribution map for Germany. In: Floraweb .