Notes . 
7 8i 
The writer is of opinion that there are two great primitive stocks 
of vascular plants, the Lycopsida and Pteropsida. The Lycopsida 
include the Lycopodiales and Equisetales, and are palingenetically 
microphyllous and cladosiphonic. The Pteropsida include the 
Filicales and Phaenogams, which are primitively megaphyllous and 
phyllosiphonic. 
EDWARD C. JEFFREY. 
Toronto. 
