Xll MOSSES WITH A HAND-LENS 



PAGE 



3. 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. 81 



4. Leaves crisped; capsule pear-shaped and puck- 



ered about the mouth when dry. Ulota Ludwigii. 79 



Leaves scarcely crisped, capsule ovoid, not 



puckered or folded Drummondia. 79 



5. Capsules immersed or partially exserted; seta 



not apparent 6. 



Capsules exserted ; seta evident 9. 



6. Capsules green, without distinct lid; plants of 



sandy fields 7. 



Capsules with lid and peristome ; plants growing 



on shaded banks Webera. 29 



7. Leaves strongly crisped to spirally coiled when 



dry Astomum. 37 



Leaves not crisped when dry 8. 



8. Capsules pear-shaped, partially exserted. . .Bruchia. 36 

 Capsules nearly spherical, immersed and nearly 



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



9. Capsules erect, urn-shaped, no peristome 10. 



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

 Capsules strongly ventricose ; mature plant with- 

 out leaves Buxbaumia. 28 



Capsules erect, ovoid to cylindric, nearly or quite 

 straight 1 1 . 



Capsules arcuate, unsymmetric, usually cernuous..22. 



Capsule symmetric, cernuous or pendent; ovoid, 

 pyriform, or subglobose 33. 



10. Costa excurrent Pottia. 91 



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



11. Plants growing on moist cliffs, usually on lime- 



stone; peristome lacking Gymnostomum. 63 



Plants growing on various substrata ; peristome 



present 12. 



12.} Growing on stones in running water 



Fissidens Julianus. 34 



