Website/Catalog  (1912)  Page(s) 78.  
 
Summer and Autumn Clematis.
In bloom from July to October.
These flower upon the wood of the current year's growth, and should therefore be pruned to five or six eyes.  
Grand Duchess, white, slightly flushed rosy; a very effective variety...  1s. 6d

Website/Catalog  (1907)  Page(s) 65.  
 
Clematis in pots to plant out in spring and summer.
General Collection.
28 Grand Duchess (lanuginosa), lilac-heliotrope.

Book  (1906)  Page(s) 52.  
 
Principal garden varieties of Clematis:
Lanuginosa type. (July to October.)
Grand Duchess... Blush-white.

Book  (1880)  Page(s) 69.  
 

C. Grand-duchess, Cripps. — Späte Lanuginosa-Gruppe. Blätter gewöhnlich dreizählig, Blättchen breit-oval. Die Blumen sind gross, weisslich mit einem sehr blassen malvenfarbigen Schimmer, 8sepalig. Die Sepalen elliptisch, sich nicht über deckend. Staubfäden weiss, Staubbeutel braun. Juli bis October. Prämiirt 1875.

Magazine  (18 Dec 1875)  Page(s) 776.  
 
NEW PLANTS CERTIFICATED
By the Floral Committee at the Royal Horticultural Society's Meetings, 1875.
Clematis Grand Duchess... Cripps, June 16—First-class Certificate.