BARNES NORTH AMERICAN MOSSES. 287 



ticulations few; annulus compound (2). Bull. Torr. Bot. Club 20: 113. 

 1893. Granite, gneissoid and slate rocks: Idaho. 



182. Grimmia cinclidodontea C. Mull. Monoicous, male flower termi- 

 nal on a special branch: branches fasciculate: leaves subsquarrose-spread- 

 ing, loose, strict when moist, rather long and narrow, regularly concave, 

 from an oblong bass gradually attenuate, apex rather obtuse, margin quite 

 entire, flat or a little curved; costa thick, occupying whole point; cells 

 minute, round, their walls smooth, shining: perichaetial leaves larger: cap- 

 sules short pedicellate, immersed, hemispherical, macrostome, exannulate, 

 often aggregated; operculum obliquely rostellate; peristome teeth broad, 

 lanceolate, intense red, broadly trabeculate, apex perforate and irregularly 

 cleft. Bot. Centrahbl. 44: 388. 1890. On wet rocks: Ellensburgh, Wash. 



183. Grimmia crassineryia C. Mull. Monoicous; habit of G. conferta 

 but leaves wholly pointless, slightly papillose; costa rather thick, occupy- 

 ing almost all tne acumen: perichaetial leaves long acuminate from a broad 

 base, quite entire: capsule immersed, pyriform-cyathiform, macrostome; 

 seta short; operculum very obliquely rostrate; calyptra long persistent, 

 cucullate, smooth: teeth lanceolate, rather short, somewhat perforate at 

 apex. Bot. Centralbl. 44: 389. 1890. Victoria, Vancouver Is. 



184. Grimmia tenella C. Mull. Dioicous: tufts small, dirty green: 

 stem slender, fasciculateiy branched below, branches parallel, somewhat 

 flexuous slender: leaves erect spreading, scarcely crispate, subulate, nar- 

 rowly oblong-acuminate; hair point rather short, hyaline, straight or 

 slightly flexuous, slender, sharp, sharply denticulate; margin quite entire, 

 scarcely involute; costa rather broad for the leaf, excurrent: cells all chlo- 

 rophyllose, thick walled, a few at base quadrate, toward apex round: 

 perichaetial leaves larger, broader: seta slender, short; capsule scarcely sur- 

 passing leaves, erect, small, oblong, truncate, leptodermous, pale with age, 

 smooth; lid minute, obliquely rostrate; teeth small, slender; calyptra nar- 

 row, cucullate. Bot. Centralbl. 44: 388. 1890. Coeur d' Alene, Idaho. 



184a. Grimmia Manniaa C. Mull. Dioicous: tufts slender, compressed, 

 intensely green; stems fastigiately branched, very small, densely foliate, 

 loosely coherent: stem leaves densely imbricate, small, from a broad trun- 

 cate base deeply carinate, open, obtusely short acuminate; margin plane, 

 quite entire; costa slender, green, excurrent; cells at base small, green, 

 empty, hexagonal, rather thick walled, above minute and obscure: peri- 

 chaetial leaves very closely imbricate, much larger, more obtuse, cells larger, 

 more involute, all rather fleshy: seta long exserted, slender, reddish, some- 

 what spirally twisted; capsule erect, globose-urn-shaped, thick walled, 

 rufous; lid conic; peristome teeth short, red, more or less split and perfor- 

 ate. Flora 70: 233. 1887. Napa Springs, Calif. 



185. Grimmia elongata Klf. Dioicous: tufts lax, pulvinate, dark be- 

 low, olive green and shortly canescent at apex: stems slender, elongated, 



