Mosses and Lichens 



upward ; vein faint and short, single, or two-forked, or want- 

 ing ; base slightly unequal ; cells very small, rhomboidal-oblong, 

 4-sided at the basal angles. 



Leaves at tie base of the 

 pedicel (perichcetial leaves). 

 Long and sheathing, taper- 

 pointed, surpassing the spore- 

 case. 



Habit of flowering. Male 

 and female flowers on the 

 plant (monoicous). 



Veil (calyptra). Small, 

 white, covering the lid only, 

 oval-oblong, dirty-yellow, brown 



N. pennata. Leaves. 



Spore-case. Immersed, 

 when old, thin-walled. 



Pedicel. None, the 

 cellular sheath at the base 

 of the spore-case hairy. 



Lid (operculum.) 

 Conical, beaked. 



Teeth (peristome). 

 Pale-yellow, the outer of 

 linear awl-shaped teeth 

 from a narrowly lance- 

 shaped base, cohering at 

 the apex, densely cross- 

 barred, irregularly 

 divided, the inner segments rudimentary. 



Spores. Mature in spring. 



Distribution. Common in North America 



Perichaetial leaves. 



N. pennata. 



Old spore- ( 9 ) Female 

 case with- branch. ( 4 ) 

 out lid. Male branch. 



universal. 



Genus ANOMODON, Hook & Tayl. 



The species of the Genus Anomodon are found on the roots 

 of trees in woods, on rocks and on decayed logs. 



The primary stems are prostrate, with horizontal shoots from 

 the base and erect secondary stems irregularly branched. The 

 stem-leaves are distant and minute, while the leaves of the branch- 

 lets are crowded, spreading, or turned to one side, and have 

 minute cells, usually with tiny protuberances on both faces. 



266 



