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'R. californica plena' rose References
Magazine  (2008)  Page(s) Vol. 22, n.3, p. 62.  
..I have recently discovered that this rose is a hybrid of R. nutkana rather than R. californica....
Book  (2000)  Page(s) 49.  Includes photo(s).
Rosa californica = Sa forme semi-double, ‘Plena’, est plus élégante au jardin; elle produit à foison ses fleurs rose lilacé vif et ses fruits vermillon.
Book  (Sep 1993)  Page(s) 20.  
The double form … commonest in the garden
Book  (1993)  Page(s) 67.  Includes photo(s).
[Listed under "Wild Roses and Their Cultivars"] Description. A cultivated form of Rosa californica. Summer flowering. Height: 8 ft. Well scented.
Book  (1988)  Page(s) 137.  
location 146/8, R. californica f. 'Plena' Rehd., according to A. Jäger identical with 'THEANO' by Geschwind, CINNAMOMEAE, R. Geschwind, 1895, pink-light carmine, semi-double, late-blooming, vigorous, upright, climbing, 2-3.5 m, large prickles, medium-dark green small-medium matte foliage, 5 leaflets, orange-coloured small rounded to urn-shaped glossy fruit, upright elongated persistent sepals, few hips
Website/Catalog  (1985)  Page(s) 39.  

Rosa californica plena..... 1894.

Book  (1984)  Page(s) 106.  
Rosa californica ‘Plena’/Rosa californica f. plena Rehder/’Theano’ = Obtenu par Geschwind en 1894. Feuilles = 5 ou 7 folioles elliptiques larges, 1 à 3cm de long, bords à dents simples… corymbes paniculés. Les tiges de l’année précédente s’arquent sous le poids des fleurs qui se forment sur toute leur longueur… fleurs doubles, mais peu serrées, varient du rose soutenu au pourpre pâle... La plante a, dans son ensemble, une réelle valeur décorative.
Website/Catalog  (1982)  Page(s) 32.  

Rosa california plena  Rich lilac-pink semi-double flowers born liberally on a gracefully arching bush in high summer. A very useful Rose. Unknown date. W. Shade tolerant. (S) 6 x 5’.

Book  (1981)  Page(s) 277.  
R. californica 'Plena'. Shrub to 2 m./6.6 ft. high; branches arching, flowers loosely double, warm rose to bright crimson, fragrant, June-July. GSR 4. (= R. 'Theano' Geschwind). 1894.
Book  (1981)  Page(s) 62-63.  
cv. [cultivar] 'Plena' - -The name R. californica f. plena Rehd. is based on the semi-double form portrayed as R. californica in Willmott, The Genus Rose, Vol. I, p. 223, t. The plant now grown as 'Plena', which may be a different clone, was introduced to this country ...from the American firm Bobbink and Atkins of New Jersey....A conspicuous feature of the buds is the long and slender tips to the sepals.
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