144 BRYACE^. [Grimmia. 



Var. afBnis, Bruch & Schimp. More robust: capsule 

 large, with shorter pedicel, scarcely exserted : leaves with a 

 longer hair-point. 



Hab. Top of Mount Marcy, New York (Lesquereiix); Western 

 Nevada ( Watson) ; Twin Lakes, Colorado ( Wolf <fc Eothrock) ; the variety 

 at Sante Fe, New Mexico (Fendler), and in the Eocky Mountains (E. 

 Hall). 



-H- -i— Flowers dioecious. 



22. Gr. Pennsylvanica, Schwaegr. Plants robust, rigid, 

 tufted or more or less widely cespitose, dark green : stem-leaves 

 lanceolate, gradually acuminate, submuticous, enlarged, con- 

 cave, and reflexed toward the base ; perichaetial leaves longer, 

 tapering into a short rough hair-point : capsule nearly im- 

 mersed on a pedicel not half its length, oblong-ovate, smooth 

 when dry; lid conical-rostrate, erect; teeth purple, broadly 

 lanceolate, split and cribrose above ; annulus large. — Suppl. 

 i. 91, t. 25 ; Sulliv. Mosses of U. States, 37, and Icon. Muse. 

 68, t. 43 ; Sulliv. & Lesq. Muse. Bor.-Am. Exsicc. n. 138. 



Hab. On rocks, hills and mountains of the central and southern sec- 

 tions; common. 



23. G. calyptrata, Hook. Plants larger, in dense loosely 

 adhering glaucous-green whitish tufts : lower leaves gradually 

 smaller, lanceolate, short, with a short pellucid point, the comal 

 and perichsetial much longer, lanceolate from an oblong slightly 

 broader base and tapering into a rough hair-point reaching 

 higher than the top of the capsule ; borders flat or slightly re- 

 curved : calyptra campanulate-mitriform, irregularly rugose, 

 plicate, 5-6-lobate, covering the capsule nearly to its base : cap- 

 sule on a pedicel equalling it in length, oblong-oval, smooth 

 w^hen dry, slightly constricted under the broad orifice ; lid coni- 

 cal-rostrate ; teeth lanceolate, very cribrose nearly to the base ; 

 annulus none. — Hook, in Drumm. Muse. Amer. n. 60 ; Sulliv. 

 & Lesq. Muse. Bor.-Am. Exsicc. n. 139; Sulliv. Icon. Muse, 

 i. 69, t. 44. Guemhelia calyptrata., Muell. Syn. i. 775. 



IIab. Rocky Mountains, California, New Mexico, etc. ; not rare on the 

 western slope. 



24. G. leucophsea, Grev. Stems rather stout, in wide 

 silver-gray tufts : lower leaves very small, ovate-lanceolate, 

 acuminate, without hair-point, the upper oblong-lanceolate, con- 

 cave at the lower part, prolonged into a long very rough hair- 

 point, decurrent, plane on the borders, narrowly costate ; peri- 



