BARNES — NORTH AMERICAN MOSSES. 



227 



Leaves rounded, abruptly apiculate. 

 Revolute at base on one side, capsule immersed 

 Not revolute, capsule exserted 

 Leaves acute or acuminate. 

 Ecostate or nearly so. 



Capsule immersed or half exserted. 



Shoots obtuse 



Shoots attenuate to apex 

 Capsule exserted. 

 Segments as long as the teeth and similar 

 Segments shorter, abruptly narrowed from a 

 carinate plicate base 

 Costate to the middle or beyond. 

 Margins broadly revolute .... 

 Margins not revolute. 

 Alar cells fawn-color, costa thin, percurrent 

 Alar cells opaque, costa vanishing 



. N. Menziesii.i 282. 

 . N. complanata, 283. 



. N. pennata, 282. 

 N. oligocarpa,^ 283. 



N. Douglasii,' 283. 

 broad 



N. pumila, 284. 



N. Floridana, 284. 



N. Ludovieise, 284. 

 N. cymbifolia, 284. 



HOMALIA, p. 285. 



u 



Costa single, vanishing above the middle, leaves serrate \ w janf^n'4 Igs' 



Costa double, very short or none, leaves entire 



H. gracilis, 286. 



METEORIUM, p. 286. 



Leaves serrulate 



Leaves minutely crenulate 



M. pendulum, 286. 

 M. nigrescens, 287. 



LEUCODON, p. 287. 



1/ 



Capsule exserted. 



Leaves entire, open-erect, lid exactly conic . L. scinroides, 288. 



Leaves serrulate at apex, squarrose, lid obliquely ros- 

 trate L. jnlaceng, 288. 



Capsule surpassed by perichsetial leaves, leaves secund L. brachypus, 288. 



1 See Appendix, nos. 399, 100. 



3 See Appendix, no. 401. 



• See Appendix, no. 402. 



' Including H. iriehomanoides L . & J. Man. 285 (not Bruoh. & Schimper) , J?, obtusata 

 L. & J. (not Mitten). I am unable to detect from the descriptions alone any character 

 which will separate S. Jamesii from S. MacounU. If type specimens show S. Jamesii 

 to be the same its priority will make it the name for the type instead of H, Maeounii. 



