The Department of Plant Sciences at UC Davis has an online look-up tool accessing its Rooting Database.
Users can search by Genus or Cultivar and retrieve rooting information for that plant.

Link: http://rooting.ucdavis.edu/Pchome.htm

Sample of data returned on search:

Name        : Abelia grandiflora                                                                                              
Cultivar    : Edward Goucher                                                                                 
Cutting Type: Softwood, terminal or subterminal
Age-Stage   : [
When taken  : July
Medium      : Perlite or well drained medium
Auxin       : Hormex - full strength
Structure   : mist
Bottom Heat : NoBottom Heat .
% Rooting   : 100%
Time to root: 4 weeks
Care        : [
Location    : Honolulu, Hawaii.
Reference   : Oka, P. 1978. Propagation of Abelia grandiflora 
              Edward Goucher. The Pl. Prop. 24(1):4-5.  ]