Website/Catalog  (1919)  Page(s) 67.  
 
Clematis Jackmanni-Hybrids....Alexandra, reddish semi-violet.... 10 pieces M 35.-, 100 pieces M 300.-

Website/Catalog  (1907)  Page(s) 65.  
 
Clematis in pots to plant out in spring and summer.
General Collection.
4 Alexandra (Jackmanii), violet-blue.

Book  (1907)  Page(s) 144.  
 
It is a matter of interest that hybrid clematis may be grown in beds, and in this case require to be trained over hoops to form a low convex shield-shaped mass of green leaves and gorgeous flowers.  For this purpose the best are Jackmanni, with violet-purple flowers; Rubro-violacea, with maroon-purple flowers; Alexandra, reddish-violet; Magnifica, purple and red; Rubella, deep claret; Star of India, reddish-plum with red stripe; Tunbridgense, reddish-lilac with mauve stripe.

Book  (1906)  Page(s) 53.  
 
Principal garden varieties of Clematis:
Jackmanni type.  (July to October.)
Alexandra... Pale reddish-violet.

Magazine  (1906)  Page(s) 232.  
 
Alexandra (Jackman 1872). Violet-purple, passing to lilac

Book  (1904)  Page(s) 330.  
 
Other hybrids or varieties of C. Jackmani are: Var. Alexandra, Jackman (C. Alexandra, Hort), reddish violet...  

Book  (1898)  Page(s) 65.  
 
Variétés Horticoles
1er Groupe.—PATENS
Section III. — Jackmani.
Alexandra (Jackman).  Fleur violet clair à étamines blanches.

Website/Catalog  (1880)  Page(s) 174.  
 
Clematis. — Clématite.
3. Alexandra. — Larges fleurs d'un beau rose violacé; du groupe de Jackmani... 1 50

Magazine  (Feb 1879)  Page(s) 50.  
 
The Clematis.
Here is a list of some of the best and most distinct of the [summer]-flowering varieties: Alexandra, Jackmanni, Lady Bovill, lanuginosa, lanuginosa nivea, magnifica, rubella, Thomas Moore, Tunbridgiensis, vilustina purpurea, and viticella rubra grandiflora.

Magazine  (1877)  Page(s) 266.  
 
Clematis Alexandra (Jackman), s. de splendida; rouge-violet.