416 



PHYLLOCLADINEAB 



[CH. 



leaf-like branches from Kreischerville for which HoUick and Jeffrey 

 instituted the genus Androvettia^ (fig. 806, A— C) : some examples 

 of that genus are clearly distinct as there are small leaves borne 



Fio. 798. A, B. Protophyllocladus subintegrifoUus. C. Drepanolepis rotundifolia. 

 D. Phyllodadopsis heterophylla. (A, B, after Newberry and HoUick; C, after 

 Nathorst; D, after Fontaine. Nat. size.) 



on the flat phylloclade, but other specimens are hardly distinguish- 

 able from Protophyllocladus. Though it would be foolish to deny 

 that the marked resemblance as regards form and venation between 

 certain species of Protophyllocladus or Thinnfeldia and Phyllocladus 

 may be significant^ it is true that no satisfactory evidence has been 

 produced in support of actual affinity to the recent genus. 



1 See page 436. 



