206 BRYACE^. [Bartramia. 



peristome as in the following. — Schrad. Journ. Bot. iv. 180. 

 j5. gracilis, Floerke ; Muell. Syn. i. 508. £. (Ederi, Schwaegr. 

 Suppl. i. 2. 49, t. 59; Bryol. Eur. t. 318. 



Hab. On wet rocks in mountains, or northward, from New England to 

 the Rocky Mountains and Canada. 



Variable, in more or less compact densely tomentose tufts. The dark 

 green color of the tufts, the slender stems, and the shorter leaves give to 

 this moss an appearance different from that of the following species. 



6. B. pomiformis, Hedw. Tufts deep, flat and wide, or 

 smaller and pulviuate, yellowish green above, pale brown and 

 tomentose within : leaves open or erect-spreading, curved or 

 cirrhate when dry, lanceolate, carinate, sharply serrate above, 

 the borders revolute from the middle downward; costa per- 

 current or excurrent into a short spinulose awn : flowers an- 

 drogynous (male and female flowers contiguous) : capsule 

 spherical, long-pedicellate ; outer teeth regular, densely articu- 

 late ; segments shorter than the teeth, cleft open ; cilia simple, 

 short or rudimentary. — Spec. Muse. 164; Bryol. Eur. t. 319. 

 J3r yum pomi forme, Linn. Sp. PI. 1115. 



Var. crispa, Schimp. Stems and leaves longer, narrower, 

 cirrhate-twisted when dry : capsule short-pedicellate. — £. 

 crispa, Swartz. 



Hab. Shady banks and fissures of rocks; common on the eastern 

 slope, in valleys and mountains; Columbia River, Oregon {Hall, Nevius). 



7. B. Halleriana, Hedw. Plants soft, in bright green 

 tufts : leaves long, narrowly subulate from an enlarged whitish 

 half-clasping base, serrulate above, spreading all around the 

 stems or inclined on one side, flexuous when dry : flowers as in 

 the preceding species : capsule on a short curving pedicel, often 

 binate, becoming lateral or as if axillary by the continuous inno- 

 vations of the stems, pale brown ; lid very small, convex-coni- 

 cal ; teeth dark brown, incurved when dry. — Muse. Frond, ii. 

 Ill, t. 40 ; Bryol. Eur. t. 320. 



Hab. Rocky Mountains, Portage River {Dnimmond). 



8. B. radicalis, Beauv. Plants soft, loosely tufted, glau- 

 cous-green, tomentose their whole length ; stems short, prostrate 

 at base, branching from below the floriferous apex : leaves 

 erect, open and subsecund, linear-lanceolate, cuspidate by the 

 excurrent costa, sharply serrate, pajiillose on the inner face 

 only ; perichietial broadly ovate, abruptly and narrowly long- 

 acuminate from the enlarged base : flowers monoecious, the 



