Mosses and Lichens 



20 to 30, covering most of the upper half of the blade, 6 to 7 

 cells deep, the terminal cell oval in section with tiny projection 

 (papillose). 



Leaves at line base of the pedicel (perichcetial leaves'). Sheath- 

 ing, longer, without lamellae. 



Habit of flowering. Male and female flowers on the summits 

 of separate plants, (dioicous). 



Veil (calyptra). Hairy, not covering the spore-case. 



Spore-case. Nearly cylindrical to egg-shaped, smooth, light- 

 green, inclined or horizontal, somewhat curved. 



Pedicel (seta). Flexuose, I to 2 inches long. 



Lid (operculum). Small with a slender beak. 



Teeth (peristome). Thirty-two in number, blunt. 



Spores. Mature in late summer. 



Distribution. In mountainous regions. 



/ HAIRY-CAP MOSSES 



Genus POLYTRICHUM, Linn. 



shoot Found in extensive patches by 

 roadsides and in open woods. 



Brown and unattractive when dry, 

 fresh and luxuriantly green when 

 moist, owing 

 to the habit of 

 inrolling the 

 ale cluster thin margins 

 of jt-rst ^jt&r. o f the leaves 

 and folding 

 them against the stem 

 in dry air and of un- 

 rolling and turning 

 them at right angles to 

 the stem in damp air. 

 The Genus Poly- 

 trichum contains 

 plants which were 

 the first to be recog- 



P. juniperimim. 



Maiepiant. nised as "plants with- 



P. juniperinum. Leaves with 

 inrolled margins. 



248 



