Book  (Oct 2001)  Page(s) 108.  Includes photo(s).
 
Clematis 'Alexander'
Montana Group
(C. montana 'Alexander')
Colonel R.D. Alexander (India) 1961
Selected wild form of C. montana
... single, scented, creamy white, cup-shaped flowers... four broad tepals... Best in a warm, sunny position... Slow to become established and flower well...