BARNES — NORTH AMERICAN MOSSES. 225 



2. Leaves not aurieled, 



* Tuhulose or sub-tubulose. 



Apex obtuse and cucuUate F. Langloisii, S97. 



Apex acute and not cucuUate .... F. fllifonuis,^ 271. 



* * Concave and incurved on the borders. (* * *) 



Perichsetial leaves round-obtuse, entire or lacerate. 



Teeth of 14-20 articulations, leaves oblong lanceolate F, Delamarei, S84. 



Teeth of 28-32 articulations, leaves broadly oval . F. mollis, 385. 



PerichsBtial leaves abruptly pointed, entire . . F. Dalecarllca, 270. 



* * * Plane or concave but not incurved. 



Alar cells very large F. Sullivantii, 271. 



Alar cells scarcely enlarged or only moderately. 



Transverse bars of the endostome complete throughout. 

 Leaves decurrent, teeth not lacunose . F. Neo-Mexicana,^ 269. 

 Leaves not decurrent, teeth generally lacunose. 



Capsule contracted below mouth when dry F. hypnoides, 272. 

 Capsule not contracted below mouth when dry F. Durieei, 39^. 

 Transverse bars of the endostome not complete. 

 Articulations of the teeth 12-20. 

 Endostome rudimentary, transverse bars not com- 

 plete at any point .... F. microdunta, 394. 

 Endostome better developed, transverse bars com- 

 plete above F. disticha, 272. 



Articulations of the teeth 20-25 . . . . F. Lescnrii, 271. 



DICHELYMA, p. 272.' 



Costa percurrent or vanishing. 

 Capsule exceeding perichaetium . . . . D. falcatum, 273. 

 Capsule not exceeding perichsetium . . D. pallescens,^ 274, 



1 See Appendix, no. 396. 



^iF. maritima C. Mflll., falls here, and is probably only a variety of F. Neo-Mexicana. 

 See Appendix, no. 3S0 ; also no. 379. 



* Revised by Cardot, I. c. 



'Including B. Novae-Srunswieiae Kiadh., and D. obtusulum Kmdb. (Mac. Cat. 159), 

 tec. Cardot, ibid. 143. 



