BARNES — NORTH AMERICAN MOSSES. 



179 



ANCECTANGIUM, p. 54. 



Leaves long-lanceolate, subulate pointed 

 Leaves lanceolate, acute ..... 



A. Peckii, 55. 

 A. compactum, 45. 



WEISIA, p. 55. 



Inflorescence autoicous. 



Leaf margins involute, costa stout, excurrent . W. viridala, 55.^ 



Leaf margins not involute, costa thin, vanishing in the 



acumen W. convoluta, 48. 



Inflorescence dioicous. 



Teeth large, lacunose and bifid, capsule 8-suIcate W. longiseta,^ 56. 



Teeth truncate, capsule not sulcate . . . . W. Wolfti, 57. 



DICRANOWEISIA,» p. 57. 



Leaf cells at base thick-walled, linear (1 : 6-10) 

 Leaf cells at base thin-walled, rectangular (1:2-3) . 



D. crispula, 57 

 D. cirrhata, 57. 



RHABDOWEISIA, p. 58. 



Leaves minutely denticulate or entire; teeth filiform, 



smooth, fugacious ....... R. fugax, 59. 



Leaves coarsely dentate; teeth linear, obliquely crossed- 



striate R. deuticulata, 59. 



CYNODONTIUM, p. 59. 



Annulus very narrow and persistent or none. 

 Teeth bifid or trifid, pale .... 

 Teeth bifid, red to purple. 



Collum indistinct or none .... 

 Collum short, inflated and strumose 

 Teeth not bifid, purple ..... 

 Annulus distinct. 

 Leaves long taper-pointed, apex serrate 

 Leaves more obtuse, apex crenulate 



C. subalpestre, 51. 



C. gracilescens, 60. 



C. Tirens, 61. 



C. Schisti, 59. 



C. polycarpum, 60. 

 C. striiinulosum, 52. 



1 See also Appendix, nos. 49, 50. 



'From the examination of specimens of this species from Florida and Louisiana, 

 Renauld & Cardot conclude that it is only a variety of the most variable and polymor- 

 phous W. viridula. 



^ D, obliqua Eindb. Mac. Cat. 256 is nomen nudum. 



