Dicranum.] BRYACE^. 67 



or less reclined, ovate or oblong, obscurely sti'iate, plicate when 

 dry, with a short, often indistinct, collum, slightly constricted 

 under the obliquely inclined orifice ; pedicel yellow ; lid long 

 subulate-beaked ; teeth bifid or trifid ; annulus simple, very nar- 

 row. — Bryol. Eur. Coroll. 13; Braithw. Brit. Moss-Fl. i. 107, 

 t. 15, G. Dicranum heteromcdlum, Hedw. Muse. Frond. 1. 68, 

 t. 26 ; Bryol. Eur. t. 62 ; SuUiv. 1. c. 



Hab. Rocks, clay banks, naked soil, roots of trees, especially in moun- 

 tainous regions; very common. 



A very variable species; the leaves sometimes erect-open and strict (var. 

 orthophylla), or interruptedly tufted (var. interrupta, Schimp.); capsule 

 sometimes straight (var. orthocarpa), etc. It is easily distinguished from 

 the preceding by the bright color of the glossy leaves and the yellow pedi- 

 cel of the reddish capsule, which elongated when dry has its orifice cui'ved 

 inward or oblique. 



11. D. curvata, Schimp. Loosely cespitose; stems shorter 

 than in the last species : leaves setaceous, subulate from a short 

 ovate base, canaliculate upAvards, minutely denticulate at the 

 apex, falcate ; perichretial leaves longer at the oblong base : cap- 

 sule erect or scarcely inclined, oblong, distinctly striate, sym- 

 metrical ; lid large at the higlily convex base, less narrowly 

 subulate ; teeth regularly bifid to the middle ; annulus broader. 

 — Bryol. Eur. Coroll. 13 ; Braithw. 1. c. 106, 1. 15, F. Dicranum 

 curvatitm, Hedw. Sp. Muse. 132, t. 31 ; Bryol. Eur. t. 61. 



Hab. On sandstone, Lancaster County, Pennsylvania (T. C. Porter); 

 White Mountains (James). Very rare. 



22. DICRANUM, Hedw. (PI. 1,2.) 

 Plants large, once or many times dichotomous. Stems radic- 

 ulose at base or all covered Avith a coating of radicles. Leaves 

 spreading or secund, rarely papillose, lanceolate-subulate or long- 

 lanceolate, with a solid semi-terete more or less dilated costa ; 

 cells of the areolation linear-oblong in the upper part of the 

 leaves, long and generally very narrow toward the base, enlarged 

 quadrate and sometimes inflated and colored at the angles ; peri- 

 chsetial leaves more or less sheathhig. Flowers monoecious or 

 dioecious. Capsule erect or cernuous, with a regular or rarely 

 strumose collum. Operculum subulate-beaked. Teeth of the 

 peristome bifid, purple at base. 



