340 BRYACE^. [Hypnum. 



irregularly pinnately raraulose ; branclilets curved at the apex : 

 leaves subfalcate-secund, ovate-lauceolate, acuminate, serrulate, 

 costate to above the middle, loosely areolate with few quadrate- 

 oblong alar cells ; perichoetial leaves gradually narrowed into a 

 long point, costate : capsule cernuous and horizontal, turgid or 

 gibbous-ovate, constricted under the orifice when dry ; pedicel 

 purple, tuberculate ; lid large, convex-conical, apiculate ; seg- 

 ments perforated, and cilia as long as the teeth ; annulus revo- 

 luble. — Spec. PI. 1129; Hedw. Muse. Frond, iv. 70, t. 27. 

 Urachythecium velutinum, Bruch & Schimp. Bryol. Eur. t. 538. 

 a. dediviim, Mitt., Journ. Linn. Soc. viii. 33, t. 6. 



Hab. Mountain regions, on soft loose earth in shady places; moun- 

 tains of New York, Vermont, etc.; Pend d'Oreille Iliver, N. Idalio 

 (Lyull); not common. 



Avery variable species; plants slender or robust; stems more or less 

 divided, and the branclilets varying in length; leaves close or more dis- 

 tant, bright green or yellow, opaque or glossy; capsule subglobose or 

 oblong, on a short or long pedicel, etc. According to Mitten, //. decli- 

 vian differs from the normal forms merely in the thicker more scabrous 

 pedicel and the capsule pendulous when old, characters which in such 

 polymorphous species cannot be considered as specific. 



46. H. Hillebrandi, Lesq. Monoecious : plants small, in 

 dense intricate glossy yellowish tufts ; stems prostrate, irregu- 

 larly pinnately ramulose ; branches short, radiculose : leaves im- 

 bricate, erect, rarely sul)secund, ovate-lanceolate, acuminate, con- 

 cave, costate to the middle, flat or slightly reflexed on the bordei-s, 

 serrulate all around ; alar cells numerous, small, quadrate; peri- 

 chajtial leaves oblong at base, gradually short-acuminate, pel- 

 lucid, ecostate and nearly entire : capsule small, erect, tui-gid at 

 base, obovate, nearly equal, rarely inclined, constricted under 

 the broad orifice when empty ; pedicel short, 1 cm. long, red- 

 dish and rough at base, yellowish and smooth above ; operculum 

 short-conical, obtuse, apiculate ; peristome normal ; segments and 

 cilia as long as the teeth ; annulus simple. — Mem. Calif. Acad. 

 i. 33. Brachythecium Hillebrandi, Sulliv. Icon. Muse. Suppl. 

 98, t. 74. 



Hab. On rocks, Merced River, California (Bolander). 



47. H. Fendleri, Sulliv. & Lesq. Monoecious and more 

 generally synoecious : plants small, densely entangled, cespitose, 

 pale green, glossy ; stems prostrate, radiculose, closely ramu- 

 lose ; branclilets very short, terete-foliate : leaves erect, ovate 

 or elUptical-lanceolate, narrowed into a somewhat long narrow 



