288 
AT. Bancroft. 
(42), Warming (74) and Hallier (26, 27, 28). These may be con¬ 
sidered briefly with regard to their treatment of the two main 
divisions of the Angiosperms. 
Honocolyleclonb Dicotyledon 5 
Diagram II. 
The Evolution of the Monocotyledons according to Bessey’s System (1897). 
Bessey (Diagram II; see 7) considers that Monocotyledons 
and Dicotyledons are modifications of a common type, diverging 
from one another at an early period, the apocarpous forms of both 
