72 BRYACE^ [Dicraniim. 



Var. orthocarpum, Schimp. Plants slender: leaves 

 shorter, erect; capsule small, erect. 



Hab. Bogs and damp rocks, in alpine and subalpine regions; Mount 

 Marcy; Wliite Mountains; Northfirn sliores of Lalic Superior (^Ir/assfe); 

 Rocky Mountains (Drummond); Vancouver Island [Macoun). 



13, D. fuscescens, Turn. Plants loosely cespitose, vari- 

 able in size, slender or robust : leaves more or less tufted at the 

 tops of the innovations, secund or flexuous, pale green or tawny 

 yellow, slightly twasted in the upper part when dry, narrowly 

 lanceolate-subulate, concave ; costa flat and broad ; cells of the 

 areolation minute, rounded-quadrate in the uj^per part of the 

 leaves, long and narrowly rectangular from the middle down- 

 ward, even to the base near the costa, enlarged, quadrate and 

 yellow at the angles ; pericha3tial leaves sheathing, abruptly 

 short-subulate pointed: calyptra large, white: capsule ovate- 

 oblong, more or less turgid, inflated at the collum, striate, fur- 

 rowed when dry ; lid pale, long subulate-beaked ; teeth irregu- 

 larly split and perforated; annulus narrow. — Muse. Hibern. 60, 

 t. 5. D. congestum, Brid. Muse. Recent. Suppl. i. 176 ; Bryol. 

 Eur. t. 77 ; Sulliv. Mosses of U. States, 22. 



Var. longirostre, Schimp. Leaves narrower, crispate when 

 dry, subserrulate at the apex : capsule shorter, ovate, turgid, 

 distinctly striate ; lid with a longer slender beak. — I), longi- 

 rostre, Schw^aegr. 



Var. flexicaule, Schimp. Stems long, decumbent, genicu- 

 late or flexuous, without radicles : leaves falcate secund : ca2> 

 sule long-pedicellate. — 1>. flexicaule, Brid. 



Var. angustifolium, Schimp. Plants short, densely tufted : 

 leaves erect, narrow, blackish or dull green. 



Hab. On rocks and decayed wood, very common in mountainous 

 regions and very variable. The above described varieties and some others 

 less marked have been observed in North America. The species is rare 

 in California. A variety with leaves papillose on the back has been sent 

 from the redwoods of that State by Bolander. 



14. D. Muhlenbeckii, Bruch & Schimp. Plants densely 

 cespitose and tomentose, dark green, passing to black when 

 old ; stems long, erect : leaves crowded, sjireading, flexuous, 

 twisted-crisjDate when dry, lanceolate-subulate, concave or sub- 

 tubulose above, denticulate toward the apex, smooth on the 

 back, loosely areolate toward the base ; alar cells not inflated 

 nor enlarged, orange-colored ; inner jierichietial leaves long- 



