Rosa arkansana
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Rosa arkansana |
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Rosa arkansana , also known as prairie rose , is a species of rose ( Rosa ) plant within the rose family (Rosaceae). Rosa arkansana is the state flower of the states of North Dakota and Iowa .
description
Depending on the location, Rosa arkansana forms a compact shrub with heights of about 45 centimeters, in mild regions up to 1.20 meters. The heavily reinforced branches have red-brown bark . The imparipinnate leaves are 2 to 5 cm long and consist of five to nine oval leaflets . The hermaphrodite, radially symmetrical , pink flowers have a diameter of 2.5 to 5 cm. The flowering period extends from May to August. From the end of August, Rosa arkansana bears rounded, red rose hips that are 12 to 15 millimeters in diameter.
The number of chromosomes is 2n = 28.
Occurrence
The original distribution area of Rosa arkansana extends in North America from New Mexico to the northern regions of Canada . This very robust wild rose is hardy to –35 ° C ( USDA zone 4 ).
Systematics
Rosa arkansana was found in 1874 by Thomas Conrad Porter on the Arkansas River in Colorado and was first described scientifically.
The widespread distribution of Rosa arkansana and its genetic variability led to numerous synonyms .
From Rosa arkansana two are varieties recognized:
- Pink arkansana Porter var. Arkansana (Syn .: Rosa blanda var. Arkansana (Porter) order , pink lunellii Greene , pink rydbergii Greene )
- Pink arkansana var. Suffulta (Greene) Cockerell (Syn .: Pink alcea Greene , pink conjuncta Rydb. , Rosa pratincola Greene , pink suffulta Greene , pink suffulta var. Relicta (Erlanson) Deam )
use
Rosa arkansana was used by the Hungarian rose breeder Rudolf Geschwind at the end of the 19th century alongside Rosa blanda , Rosa acicularis and other wild roses to breed a group of robust and particularly hardy "Nordland roses". When cultivating Rosa arkansana , it is important to ensure that it spreads strongly via runners .
literature
- Charles Quest-Ritson, Brigid Quest-Ritson: Roses: the great encyclopedia The Royal Horticultural Society, translation by Susanne Bonn; Dorling Kindersley, Starnberg 2004, p. 167, ISBN 3-8310-0590-7
Individual evidence
- ↑ Rosa arkansana at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
Web links
- USDA plant database.
- Rosa arkansana in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.