Grimmia.] BKYACE^. I45 



chagtial leaves half-sheathing, erect : capsule included, ellij)tical 

 or broadly oblong, contracted at the mouth, smooth when dry, 

 brown ; lid conical at base, short, obtusely beaked ; teeth 2-3- 

 cleft to the middle or cribrose below, j^urple, spreading when 

 dry; annulus large. — Wern. Trans, iv. 87, t. 6, and Scot. 

 Crypt. Fl. t. 284 ; Bryol. Eur. t. 257. 



Hab. On flat dry sandstone rocks, in large patches; common in the 

 southern and middle sections, and in California. 



* * Calyptra cucullate : flowers dioecious. 



25. G. commutata, Hueben. Tufts loose, blackish green ; 

 stems slender, long, decumbent and naked below when old : 

 lower leaves very small, lanceolate, loosely imbricate, the upper 

 abruptly much longer and tufted, open, curving up from the 

 middle, concave at base, nearly tubulose above, with a short 

 nearly smooth hair ; perichaetial leaves broader, pale, the inner 

 broadly sheathing, linear-lanceolate above, with a longer 

 pellucid hair : calyptra descending to the middle : cajisule in- 

 cluded, broadly oval, thick ; lid acuminate from the conical 

 base, or short-beaked, acute ; teeth 2-3-cleft to below the middle, 

 or nearly entire and lacunose, purple, spreading when dry ; 

 annulus very broad, dehiscent. — Muscol. Germ. 185; Bryol. 

 Eur. t. 256. Bryjytodon ovatus, Brid. Bryol. Univ. i. 202. 

 Giiembelia ovalis, Muell. Syn. i. 774. 



Hab. California {Bigeloiu),a,n(l Monterey {Watson) ', Chippewa Falls, 

 Wisconsin {Lapham). 



26. G. EQOntana, Bruch & Schimp. In short compact 

 tufts, similar in aspect to G. ovata ; tufts smaller : leaves ovate- 

 oblong at base, lanceolate above and passing into a pellucid 

 hair variable in length, very concave, plane or erect on the 

 borders : capsule oblong, brown, thin, subexserted upon a short 

 straight or slightly flexuous pedicel ; lid short-beaked ; teeth 

 short, irregularly split, cribrose above, spreading-recurved when 

 dry; annulus none. — Bryol. Eur. t. 250. Guembeiia montana^ 

 Hampe, Bot. Zeit, iv. 125. 



Var. brachyodon. Tufts smaller: leaves with a shorter 

 hair-point : lid shorter, broadly conical, mamillate or with a 

 short obtuse beak. — G. brachyodon, Austin, Bull. Torr. Club, 

 vi. 45. 



Var. truncata. Capsule ovate-globose ; lid short-conical ; 

 teeth truncate. — G, Jamesii^ Austin, 1. c. 43 ; Watson, Bot. 



