BARNES NORTH AMERICAN MOSSES. 229 



THELIA, p. 298. 



Papillae of leaves simple. 



Horn shaped, curved , T. hirtella, 299. 



Globose . . . T. robusta, 299. 



Papillae 2-4 furcate. 



Usually bifurcate, leaves ciliate . - . - . . T. asprella, 299. 



Usually 4-furcate, leaves not ciliate . . .* T. Lescnrii, 299. 



Usually 3-4 furcate, 1 leaves ciliate ". . T. compacta, 407. 



MYURELLA, p. 300. 



Leaves serrulate, obtuse (rarely short apiculate) . M. jtilacea, 300. 

 Leaves serrulate, abruptly apiculate-acuminate . M. apicnlata, 300. 

 Leaves spinulose-dentate, abruptly long-acuminate M. Careyana, 300. 



LESKEA, p. 302. 

 I. Costa reaching to or beyond the middle. 



Percurrent L. nervosa, 302. 



Not percurrent. 

 Leaves entire. 

 Endostome divided into segments. 



Cleft between articulations, leaves bluntish. 



Leaves ovate at base, and narrowed above L. obscnra, 301. 



Leaves oblong or broadly ovate . . L. subobtnsifolia, 408. 



Not cleft, leaves acute . . . . . L. poly carpa, 301. 



Endostome a short undivided membrane . . L. Austin!, 303. 



Leaves crenulate L. tristis, 303. 



II. Costa very short or none. 



Leaf cells linear oblong L. denticulate, 302. 



Leaf cells rotundate L. cyrtophylla, 409* 



MYRINIA, App., no. 410. 



Leaves with faint traces of a costa at the base . M. pulvinata, 2 303. 

 Leaves with broad costa, sometimes bifurcate, ceasing 



below apex M. (?) Dieokii, 411. 



i No. 248 Canadian Mnsci shows this character. 

 2 i. pulvinata Wahl., L. & J. Man. 303. 



