'Rosa canina 'Laxa'' rose References
Website/Catalog (2006) Page(s) 45, 79.
Rosa corymbifera Borkh. var. froebelii (Christ) Rehd. = R. froebelii Christ = R. laxa hort. non Retz = R. dumetorum Thuill. vel R. corymbifera 'Laxa' - ca. 1890
Article (magazine) (2001) Page(s) 393.
R. coriifolia Fr. var froebelii (Lambert) Rehder Ploidy 5x
Pollen fertility 45.1%
Selfed Fruit set 100%
Selfed Seed set 77.6%
Magazine (1993) Page(s) 17.
[From article on "Roses of the 19th century in Switzerland" by Eeva Ruoff]...A vehement discussion was caused by the naming of a wild rose which Froebel & Comp from Zürich received in the 1870s, probably from Turkestan. Otto Froebel determined that this plant was eminently suitable as understock for standards and other roses due to its good rooting, the smooth, almost prickleless canes and the fact that she never suckers. He called it Rosa laxa. Hermann Christ, the well-known rosarian from Basel...came then to the conclusion that this wild rose is a subspecies of Rosa canina and gave it the name Rosa canina L var. Forebeli Christ. This was not appreciated by many people who were jealous of the the internationally known and temperamentful Otto Froebel and his success....
Book (1937) Page(s) 70.
Froebelii Rehd. (variety of coriifolia Fries) [ploidy] 35 ([thereof univalents:] 21)
Book (1936) Page(s) 282.
R. Froebeli (canina) Froebel ca. 1890; white, single. Understock for bush-roses. Not R. laxa. Central Asia. = R. Froebelii Christ. Sangerhausen