146 BRYACE^. [Grimmia. 



Calif, ii. 378. G. orbicularis, James, Bot. King Exp. 403 ; not 

 Bruch & S chimp. 



Hab. On schistose rocks and granite boulders, Mission Dolores, Cali- 

 fornia {Bolander, Brewer, Lapham)\ in Nevada, in the Bitterroot Moun- 

 tains of Western Montana and Idaho, and on Kettle River, British America 

 ( Watson). 



The areolation, textui'e and conformation of the leaves in both the 

 varieties are the same as in the normal form ; the tufts only are smaller 

 and the hair-points generally shorter. But Schimper remarks (Syn. 2d ed., 

 264) that he has received specimens from Norway with smaller tufts and 

 the leaves shortly hair-pointed. Austin describes the calyptra of G. 

 Jamesli as cucullate-campanulate, slightly unequally lobate at base. It is 

 indeed large and cucullate, but merely undulate not distinctly lobate at 

 base, or the same as in G. montana. The teeth are generally truncate by 

 maceration in var. hrachyodon; but in well-preserved specimens they 

 have exactly the characters of the European form. The greater and only 

 marked difference is in the shorter lid, but this is not a constant char- 

 acter, as in some of the well-preserved American specimens the lid is 

 obtusely rostrate and only slightly shorter, as it is shown in Bruch & 

 Schimper' s figures of the species. 



27. G. alpestris, Schleich. Plants in compact glaucous 

 green tufts : leaves gradually larger from the base of the stem 

 upward, lanceolate from an oblong base to a nearly smooth pel- 

 lucid hair-point, concave and canaliculate ; borders plane ; outer 

 perichffitial leaves broad, the inner shorter and narrow : calyp- 

 tra large : capsule oblong-cylindrical, emergent on a sliort 

 straight pedicel ; lid convex, conical-obtuse ; teeth nearly 

 entire, somewhat lacunose toward the apex ; annuhis compound, 

 persistent. — Nees & Hornsch. Bryol. Germ, ii, 139, t. 21 ; 

 Bryol. Eur. t. 251. Gtiembelia alpestris, Hampe, 1. c. ; Muell. 

 Syn. i. 772. 



Hab. On rocks at Fort Colville and Fend d'Oreille Lake (Lyall); 

 Utah {Watson). 



Mitten remarks (Journ. Linn. Soc. viii. 20) that all Lyall's specimens 

 are very dark green, but otherwise the same as the European form. 



* * * Calyptra cncullate-lobate : dioecious. 



28. G. unicolor, Grev. Plants widely cespitose, dark 

 green or black ; stems slender, naked and decumbent below : 

 leaves erect-spreading, imbricate when dry, linear-lanceolate 

 from an ovate base, blunt or obtuse or thicker at the apex : 

 calyptra long-rostrate, mitriform-cucullate : capsule erect, oval- 

 oblong, emergent on a thick somewhat long pedicel ; lid long- 

 beaked, straight or curved ; teeth orange, very closely articu- 



