150 BRYACE^. [Bacomitrium. 



Recent. Suppl. iv. 79 ; Bryol. Eur. t. 265. Trichostomum heter- 

 ostichum, Hedw. Muse. Frond, ii. 70, t. 25. 



Hab. On rocks, Eocky Mountains {E. Hall); Oregon [Ntvius)', 

 Alaska (Kellogf/); Fort Colville {Lyall). 



Plants variable in the length and thickness of the stems, sometimes 

 long and very slender, in the leaves, which are either without or with a 

 very short pellucid point, and in the capsule, whith is sometimes very 

 small and pedicellate. 



7. R. fasciculare, Brid. 1. c. Stems long, prostrate, dirty 



green or brownish ; branches nodose, with fasciculate shoi-t 



branchlets : leaves spreading, incurved or recurved, narrowly 



lanceolate, linear from an ovate base, muticous at the apex: 



calyptra papillose to near the base : capsule oval or oblong, 



solid, on a thick pedicel; lid subulate-acute, shorter than the 



capsule, crenulate at base ; teeth nearly regularly split their 



whole length into two filiform nodose segments ; annulus large. 



— Bryol. Eur. t. 267. Trie! lostomum fasciculare^ Schrad. Spicil. 



Fl. Germ. 61 ; Schwaegr. Suppl. i. 155, t. 38. 



Hab. On rocks, Alleghany Mountains {Hidlixiant); foot of Mount 

 Marcy, New York; White Moimtains; Alaska, etc. 



8. R. varium. Very similar to the last, but differing in 

 its larger size, the leaves ovate-lanceolate, obtuse or the upper 

 with a short entire hair-point, the costa percurrent, basilar cells 

 of the borders few, oblong-rectangular, the lower long, con- 

 fluent, crenulate, the medial oblong with transverse walls more 

 distinct, the upper round-quadrate ; joerichastial leaves short, 

 broadly ovate, convolute : capsule long-pedicellate, shining, the 

 subulate lid nearly as long ; teeth very long, narrow. — Grim- 

 mia {Mhacomitrium) varia^ Mitten, Journ. Linn. Soc. viii. 21. 



Hab. British Columbia [Lyall, Douglas); Observatory Inlet. 



The author remarks that the leaves are intermediate between those of 

 E. fasciculare and E. canescens, wanting, however, the loosely areolate 

 auricles at the base of the latter, and that the moss needs further observa- 

 tion, but can scarcely be considered as a form of E. fasciculare. 



9. R. raicrocarpum, Brid. 1. c. Plants smaller than in the 

 last, ramulose-nodose : leaves crowded, spreading and diversely 

 curved or falcate-secund, more enlarged at base, lanceolate 

 to a short diaphanous serrulate point ; cells of the whole 

 lamina linear, nodulose : capsule small, cylindrical-elliptical 

 or somewhat club-shaped, thin, soft, yellowish brown ; lid short- 

 beaked ; annulus large, revoluble. — Bryol. Eur. t. 268. Trichcy 

 stomwn microcarpum^ Funck, 1. c. 



