MOSSES WITH A HAND-LENS 



PAGE 



Capsule long-exserted, not wrinkled when dry- • • 4- 

 Capsule short-exserted, strongly wrinkled when 



dry ; leaves crisped when dry Ulota. 79 



Capsules immersed or partially exserted, strong- 

 ly wrinkled (except O. speciosum) when 



dry; leaves not crisped Orthotrichum. 8i 



Leaves crisped ; capsule pear-shaped and puck- 

 ered about the mouth when A^cy. Ulota Ludzvigii. 79 

 Leaves scarcely crisped, capsule ovoid, not 



puckered or folded Drummondia. 79 



Capsules immersed or partially exserted; seta 



not apparent 6. 



Capsules exserted; seta evident 9. 



Capsules green, without distinct lid ; plants of 



sandy fields 7. 



Capsules with lid and peristome ; plants growing 



on shaded banks Webera. 29 



Leaves strongly crisped to spirally coiled when 



dry. Astomum. 37 



Leaves not crisped when dry 8. 



Capsules pear-shaped, partially exserted. . .S)'«c/Ma. 36 



Capsules nearly spherical, immersed and nearly 



hidden in the long slender leaves. . . .Pleuridium. 35 



Capsules erect, urn-shaped, no peristome 10. 



Capsules erect, greatly swollen at base. .Splachnum. 88 

 Capsules strongly ventricose ; mature plant with- 

 out leaves Buxhaumia. 28 



Capsules erect, ovoid to cylindric, nearly or quite 



straight. 11. 



Capsules arcuate, unsymmetric, usually cernuous..22. 

 Capsule symmetric, cernuous or pendent; ovoid, 



pyriform, or subglobose 33. 



Costa excurrent Pottia. 91 



Costa ending below apex of leaf. . . .Physcomitrium. 90 

 Plants growing on moist cliffs, usually on lime- 

 stone ; peristome lacking Gyinnostomiim. 63 



Plants growing on various substrata; peristome 



present 12. 



Growing on stones in running water 



Pissidens lulianus. 34 



