nypnum.] BRYACE^. 343 



the apex : leaves open, broadly ovate-lanceolate, gradually acu- 

 minate, narrowed and cordate at base, not inflated at the angles, 

 obseurely plicate, serrate all around, costate to above the mid- 

 dle ; areolation loose, rhomboidal, the alar cells large, the basi- 

 lar oblong or hexagonal ; perichaetial leaves abruptly narroAved 

 into a tiliform point, reflexed from the middle : capsiile oblong 

 or ovate, turgid, subarcuate, solid, chestnut-color, brown when 

 old ; pedicel long and strong, pur])le, very rough ; operculum 

 large, convex-conical, acuminate ; segments split in the middle ; 

 cilia as long as the segments, two or three, not appendiculate ; 

 annulus double. — Spec. PL 1124; Hedw. Muse. Frond, iv. 29, 

 t. 12. jBrachi/thecium rutabulum, Bruch & Schimp. Bryol. 

 Eur. t. 543. 



Var. longisetum, Brid. Stem long, subpinnately rarau- 

 lose, loosely foliate : cajjsule oblong, subincurved on a very long 

 slender pedicel. 



Var. flavescens, Brid. Stems and branches very long, 

 prostrate, flaccid : leaves very broad, more abruptly acuminate, 

 soft, yellowish green. 



Var. plumulosum. Small, soft, with short branchlets: 

 leaves ovate-lanceolate, narrowly acuminate, glossy. — Bruch & 

 Schimp. 1. c, as Brachytliecimn. 



Var. densum. Branchlets close: leaves crowded, loosely 

 imbricate, dark green : capsule short-pedicellate, thick. — Bruch 

 & Schimp. 1. c. 



Var. robustum. Stems prostrate, long; branches and 

 branchlets stout: leaves close, broader, bright green. — Bruch 

 & Schimp. 1. c. 



Had. Common on shaded ground, roots of trees, and stones; plains 

 and mountains; W. Humboldt Mountains, Nevada [Wciison). 



A very variable species, often confounded with H. salebrosiim, from 

 which it differs in tlie scarcely plicate, less long-acuminate and less glossy 

 leaves, and the very scabrous pedicel. 



53. H. asperrimuni, Mitt. Closely resembling the last, 

 from which it differs in the dioecious inflorescence, the stems 

 more rigid, the leaves narrower, oblong-lanceolate, acuminate 

 and scarcely plicate, the alar cells quadrate, smaller, less numer- 

 ous and not granulose, the pedicel very rough, and the oper- 

 culum abruptly longer-apiculate. — Journ. Linn. Soc. viii. 33, 

 t. 6. 



Hab. British Columbia (Douglas, Lyall); California (Bolander). 



