TWENTY-SEVENTH ANNUAL MEETING. 171 



T. tophaceum (Smyth's Check List). T. crispuhim, sterile, Pottawato- 

 mie (M. Reed); SaUne (Henry). 



DESMATODON, p. 110. 



Capsule erect or nearly so ; leaves without a thickened or hya- 

 line border, papillose. 

 Costa excurrent into a hair. 

 Capsule cylindric ( 1:5-6) : teeth divided half way or entire, 

 dioecious, 



X D. plinthobius S. & L. 6 

 Costa vanishing at apex, or forming a short point ; leaves 

 hyaline at base, margins revolute. 



Capsule long cylindric, leaves crenulate x D. arenaceus S. & L. 3 



D. plinthobius. Saline, sterile (Henry), x D. arenaceus, sterile. Saline 

 (Henry). 



BARBULA, p. 115. 



I. Leaves with jointed dichotomous filaments on costa. 

 Costa narrow, round ; leaves thin, broad § I. Chloronotae. 



II. Leaves not filamentose. 

 Teeth from a low membrane scarcely projecting from the mouth. 

 Plants small : leaf cells small. 



Perichaetial leaves little different from the foliage § II. Unguiculatae. 



Perichaetial leaves long, sheathing or convokite § III. Convolutae. 



Plants robust (except B. cespitosa). 



Leaves entire ; stems radiculous § IV. Tortuosae. 



Teeth from a high tesselate membrane § V. Syntrichiae. 



§ I. Chloronotae. 

 Leaves with hair points ; tip of leaf concolorovis : hairs serrate ; 



leaves rounded, obtuse x B. henrici Rau. 



§ II. Unguiculatae. 



Teeth plainly twisted ; leaves blunt, or mucronate by the excur- 

 rent costa ; cells at base rectangular and pellu- 

 cid ; capsule oblong-elliptic to subcylindric ; 

 sub-incurved * B. unguiculata Hedw. 13 



Leaves gradually pointed, papillose ; cells at base roundish, 

 quadrate, or short-rectangular ; costa 70 micro- 

 millimeters wide at base, and tapering gradu- 

 ally X B. fallax Hedw. 13 



§ III. Convolutae. 

 Leaves plane on margins, or recurved : capsule smooth ; costa 



percurrent x B. convoluta Hedw. 32 



§IV. Tortuosae. 



Leaves long-linear, acute, abruptly mucronate B. caespitosa Schw. 37 



§ V. Syntrichiae. 



Leaves not bordered ; cells smooth B. mucronifolia Br. & Schw. 43 



X B. henrici (?), sterile (probably is Phascomitrium sessile, say Renauld & 

 Cardot), Saline (Henry). B. unguiculata, variable, Shawnee, 

 Wilson (Cragin); Brown (Becker); Saline (Henry); Riley (Keller- 



