Book  (Oct 2001)  Page(s) 181.  Includes photo(s).
 
Clematis 'Etoile Violette'
Viticella Group
(c. viticella 'Etoile Violette')
Francisque Morel (France) 1885
Parentage unknown
... single, semi-nodding, somewhat gappy, dark purple flowers... [produced] on the new season's stems... four to six velvety textured tepals...

Book  (1999)  Page(s) 235.  
 
...deep purple with cream stamens

Book  (1898)  Page(s) 65.  
 
Variétés Horticoles
1er Groupe.—PATENS
Section III. — Jackmani.
Etoile violette (Morel).  Beau coloris violet bleuâtre strié carminé.