Website/Catalog  (29 Jul 2010)  
 
Clematis viticella L. var. major hybrid
A hybrid, Clematis viticella L. var. major x Clematis flammula L.  No description of this plant is extant but see entries for the parents.

Horticultural & Botanical History
Hybrid probably raised at Camden.  

History at Camden Park
A plant was presented to the Sydney Botanic Gardens by William Macarthur on 15th September 1847.  [RBGS AB].  This is the only reference I have found to this plant.