Book  (Oct 2001)  Page(s) 139.  Includes photo(s).
 
Clematis buchananiana
Species 1818
Origin: Himalayan region
... single, nodding, bell-shaped, tubular, greenish yellow to creamy yellow, scented flowers... four tepals... Filaments and anthers are hairy, threadlike, and creamy...

Magazine  (1877)  Page(s) 267.  
 
Clematis buchamana (A. Leroy).

Book  (1855)  Page(s) 82.  
 
390. Clematis, Lin. Endl. Gen. Plant. p. 844, So named from klema, a vine branch, from most of the species having the habits of the vine.
...C. Buchaniana Seeds of plant distributed