BARNES — NOETH AMERICAN MOSSES. 



229 



THELIA, p. 



Papillae of leaves simple. 

 Horn shaped, curved 

 Globose 



Papillae 2-4 furcate. 

 Usually bifurcate, leaves ciliate 

 Usually 4-furcate, leaves not ciliate 

 Usually 3-4 furcate,' leaves ciliate 



T. hirtella, 299. 

 T. robusta, 299. 



T. asprella, 299. 



T. Lescnrii, 299. 



T. compacta, 401. 



MYURELLA, p. 300. 



Leaves serrulate, obtuse (rarely short apiculate) 

 Leaves serrulate, abruptly apiculate-acuminate 

 Leaves spinulose-dentate, abruptly long- acuminate 



M. jnlacea, 300. 

 M. apicnlata, 300. 

 M. Careyana, 300. 



LESKEA, p. 302. ^ 



L Costa reaching to or beyond the middle. 



Percurrent ....... 



Not percurrent. 

 Leaves entire. 

 Endostome divided into segments. 



Cleft between articulations, leaves bluntish. 

 Leaves ovate at base, and narrowed above 

 Leaves oblong or broadly ovate 

 Not cleft, leaves acute .... 



Endostome a short undivided membrane 

 Leaves crenulate ...... 



L. nervosa, 302. 



L. obscura, 301. 



L. subobtnsifolia, ^05. 



L. polycarpa, 301. 



L. Austini, 303. 



1. tristis, 303. 



II. Costa very short or none. 



Leaf cells linear oblong 

 Leaf cells rotundate 



L. denticnlata, 302. 

 L. cyrtopliylla, 409. 



MYRINIA, App., no. 410. 



Leaves with faint traces of a costa at the base . M. palvinata,' 303.. 

 Leaves with broad costa, sometimes bifurcate, ceasing 



below apex M- (J) Dieckii, 4II. 



1 No. 248 Canadian Mnsci shows this character. 

 'L. pulvinata Wahl., L. & J. Man. 303. 



