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 the base of the -pedicel (pericbcetial 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. 



nea 



HAIRY-CAP MOSSES 

 Genus POLYTRICHUM, Linn. 



sJioot Found in extensive patches by 



roadsides and in P en 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 year, of 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. j-uniperinum. . . . 



Male plant. niSCd 3S plants With- 



P. juniperinum. Leaves with 

 inrolled margins. 



248 



