198 EVOLUTION OF PLANTS 
Dicotyledons 
Orchids t 
Orchidacez ' Dicotyledons 
' podioietales foictarirg 
1 
Banana, ginger, etc. Aroids 
(Scitaminez) (Aracez) 
Tris, etc. Palms Grasses 
(Iridacez) (Palmacez) (Graminez) 
_ Apocarpee 
Lilies Screw-pines 
(Liliacez) (Pandanacez) 
Pineapples, etc. Bur-reeds 
(Bromeliacez) (Sparganiacez) 
Pond-weeds 
(Naiadacez, etc.) 
Diagram to illustrate the relationships of the principal orders of 
Monocotyledons. 
