BARNES — NOETH AMERICAN MOSSES. 191 



b. Not papillose . . D. Systilina, 111. 



2. Costa vanishing at apex or forming a short point. 



Leaves hyaline % of their length ... D. obtnsifolins, lU. 



Leaves hyaline only at base. 



Margins revolute. 



Capsule long cylindric, leaves crenulate . . D. arenacens, 111. 



Capsule elliptic, leaves entire . . . . D. nervosus,^ 113, 



Margins inflexed above B. Garberi, 112. 



B. Leaves with a pellucid border D. Porteri, 112. 



II. Capsule nodding, or pendent, or arcuate. 

 Leaves with a thickened border below. 



Seta straight, capsule nodding or horizontal . D. cernnns,^ 114. 



Seta reflexed, capsule pendent .... D. Lanreri, 115. 



Seta flexuous, capsule arcuate ... 9. camptothecins, 131. 

 Leaves without a border D. obliqnns, 115, 



BARBULA, p. IIS. 



I. Leaves with jointed dichotomous filaments on the costa. 



Costa broad (% leaf), flattened, leaves thick, rigid §L Aloidellee, p. 192. 

 Costa narrow, round, leaves thin, broad . §11. Chloronotae, p. 192. 



II. Leaves not filamentose. 



Teeth from a low membrane, scarcely projecting from the 

 mouth [excl. £. brevipes]. 

 Plants small. 



Leaf cells distinct §111. Cnneifoliae, p. 192. 



Leaf cells small. 

 Perichaetial leaves little different from the foliage. 



§IV. Ungniculatse, p. 193. 



Perichaetial leaves long sheathing or convolute §T. Conrolutse, p. 195. 



Plants robust [excl. S. ccespitosa]. 



Leaves entire; stems radiculose . . §YI. Tortuosae, p. 195. 



Leaves serrate, stems not radiculose . §VII. Squarrosae, p. 195. 



Teeth from a high tesselated membrane §VIII. Syntrlchise, p. 195. 



1 D. subtorqueseens C. M. & Sindb. (Appendix, no. 120) appears to be identical with 

 Z>, nervosus B. & S. 

 ' See Appendix, no. 122. 



