II. CRYPTOGAMIA. 
Class ,i. 
Class 2. 
ACROGENS (Pages 138 to 144). Stem and leaf usually distinct; leaves sometimes rudi 
mentary. 
THALLOGENS {Pages 145 and 152). No distinction between stem and leaf. 
CLASS I. ACROGENS. 
Order i. Filices (Ferns). Page 138. 
Order ii. Equisetaceae (Horsetails). Page 140. 
Order iii. Lycopodiacese (Clubmosses). Page 141. 
Order iv. Musci (Mosses). Page 143. 
CLASS II. THALLOGENS. 
Order i. Lichenes (Lichens). Page 145. 
Order ii. Fungi (Mushrooms, Moulds, etc.) Page 146. 
Order iii. Algae (Seaweeds). Page 149. 
