Article (magazine)  (2013)  Page(s) 61.  
 
Clematis viticella ...‘Plena’ (List of 1836)

Book  (1914)  Page(s) 296.  
 
1021. C. peregrina purpurea flore pleno, Eyst. Clematis purpuro-caerulea flore pleno, C.B.P., 301. Clematis purpurea flore pleno scandens, J.B. 2, 128.

Magazine  (1877)  Page(s) 271ruleas.  
 
Clematis Viticella flore pleno cærulea; double bleu.

Magazine  (1865)  Page(s) Vol. 16, p. 37.  
 
C. Viticella L. et Viticella flore pleno dont les fleurs varient du bleu pur au bleu rougeâtre, et dont le pollen a déjà fait merveille en opérant sur la C. lanuginosa.

Magazine  (1848)  Page(s) 345.  
 
The Double Blue Virgin's Bower. (Clematis vitacella pleno.)— A good climbing plant, blooming till late in the autumn. When well established, it makes most vigorous shoots, and speedily covers a great extent of trellis The flowers are dark blue, and composed of many petals. A very desirable variety.

Website/Catalog  (1839)  Page(s) 22.  
 
Clematis Viticella flore pleno.....2 new Piemont lire

Website/Catalog  (1837)  Page(s) 2.  
 
Clematis Viticella flore pleno....1 fr. 25 c.

Website/Catalog  (1828)  Page(s) 14.  
 
Clematis viticella flore plenissimo....2 L.

Website/Catalog  (1824)  Page(s) 19.  
 
Clematis
5. Viticella plena

Website/Catalog  (1818)  Page(s) 9, 26.  
 
p. 9: Clematis Viticella fl. pl., gefüllte do. [blaue italienische] Waldrebe, 1 Mark 8 Schilling Hamburger Courant
p.26: Clematis Viticella fl. pl., gefüllte blaublühende Italien. Waldrebe, dozen at 15 Marks Hamburger Courant