Floral Evolution. 
379 
I 
Ranalian c 0 il u o.jt 
ANCESTOR 
{ Pc*3 Aon> ) 
Diagram shewing the suggested heptaphyletic origin and the affinities of 
Sympetalae. The seven double lines represent the progress to synipetaly. At 
the ends of the dotted lines, in the uppermost horizontal series, are the most 
advanced descendents of each group. The ellipse encloses all the epigynous 
forms, including most of the Campanal Stock and some of the iibenales. 
