44 



CLASSIFICATION OF MOSSES. 



Genera. 



B. Leaves small and pointed, set round the stem. 



a. Capsule without fruitstaJk. On trunks of trees. CrypJicea. 



In water. Cinclidotus. Fontinalis. 



b. Capsule on a frnitstalk. In dense mats. Leaves like scales. Side branches 



undivided. Hypnum. CyUndroihecium. 



Side branches repeatedly forked. Leptodon. Hypnum. 



Leaves at an acute .angle with the stem. Stems forked ; or straight, with 

 side branches undivided. Plants in mats. 



Hypnum. Leiccodon. Antitrichia. Anomodon. LesJcea. 

 Stem straight, side branches divided. Hypnum. 



IV. Stems erect, branched at the top. Eoots creeping. 

 (True Trees.) 



a. Stems short. Branches few. Pterogonium. 

 @. Stems two to six inches high. Branches many. Capsule on branches. 



Leaves small. Climacium. Isothecium. 



y. Stems tall. Branches drooping. Capsules at the summit of the stem. 



Leaves lai'ge. Mnium. 



