Magazine  (1877)  Page(s) 261.  
 
Cl. Vitic. amethystina. — Gartenflora, 1865, 83.

Book  (1872)  Page(s) 153.  
 
C. VITICELLA AMETHYSTINA ( Jackman ).— One of the products resulting from the crossing of C. lanuginosa and C. Viticella at the Woking Nursery, the plant in this instance partaking most of the char acter of the latter parent. The flowers are bold, with erect or convergent sepals, much recurved at the edge, and of a pale violet-blue colour. It was Commended by the Royal Horticultural Society in 1864, but has not been sent out.

Magazine  (Mar 1865)  Page(s) 83.  
 
 Neue Zierpflanzen. a) Empfohlen in den Proceedings of the Horticultural Society, von der zur Prüfung der ausgestellten Pflanzen beorderten Commission.
1) Clematis Viticella amethystina und Mooreana. Zwei neue Formen, dieser selbst noch in Petersburg halbharten Schlingpflanze. Die erstere mit blassvioletten aufrechten und am Rande zurückgerollten Blumenblättern, — die andere mit tief violetten grossen Blumen.

Translation:
New ornamental plants. a) Recommended in the Proceedings of the Horticultural Society, by the Commission appointed to examine the plants exhibited.
1) Clematis Viticella amethystina and Mooreana. Two new forms of this climbing plant, which is still half-hardy even in Petersburg. The former with pale violet upright petals and rolled back at the edge, — the other with deep violet large flowers.