154 BRYACE^. [Ulota. 



collum, oval, 8-stviate its whole length, 8-plicate when dry, 

 yellowish, gradually narrowing to the orifice when dry ; teeth 

 8, linear-lanceolate, bigeminate, entire or bifid at the apex, re- 

 flexed when dry ; cilia 8, a little shorter than the teeth. — 

 Coroll. 41. Orthotrichuni Americanmn^ Beauv. Prodr. 80. 0. 

 Ilutchinsice, Smith, Engl. Bot. t. 2523; Bryol. Eur. t. 226; 

 Sulliv. Mosses of U. States, 34. Weissia Americana^ Lindb. 1. c. 



Hab. On granite rocks in the mountains, common. 

 10. U. Barclay!, Mitt. Plants short, loosely cespitose, 

 yellowish brown : leaves erect, open when moist, appressed 

 when dry, obovate, concave at base, lanceolate, acute or acumi- 

 nate, carinate, plane on the borders ; costa vanishing below the 

 apex ; upper cells angularly round, smooth, the lower oblong, 

 hyaline : calyptra conical, with a few short hairs : capsule 

 broadly oval, passing down to a long pedicel, thicker in the 

 up2)er part; teeth 8, bigeminate, with 15 or 16 articulations, 

 linear, punctulate ; cilia 8, narrow, as long as the teeth. — 

 Journ. Linn. Soc. viii. 26 ; Sulliv. Icon, SuppL 75, t. 56. 



Hab. Sitka {Barclay). 



Similar to OrthotricJium Japonicum, Sulliv. & Lesq., in Rogers North 

 Pacif. Expl. Exped., and the two may represent varieties of one species. 



56. ORTHOTRICHUM, Hedw. 

 Plants pulvinate, rooting at base in the axils of the branches. 

 Leaves striate when dry ; cells of the areolation round-hexago- 

 nal or oval, more or less chlorophyllose, minutely pai^illose or 

 rarely smooth in the upper part, the lower larger, hexagonal- 

 rectangular, hyaline. Flowers generally monoecious, the male 

 in separate lateral buds. Calyptra campanulate-mitrate, split 

 and carinate-plicate at base, deeply sulcate at the apex, hairy or 

 naked. Capsule generally immersed, 8-16-striate, rarely smooth 

 when dry. Peristome simple or double, the outer of 8 bigem- 

 inate or of 16 geminate teeth, the inner of 8 or 16 cilia. Annu- 

 lus none or very narrow. — Dorcadion, Adans., in Lindb. Syst. 



* Plants of medium size : leaves solid, striate : capsule more 

 or less exserted / peristome simple. 



1. O. anomalum, Hedw. Stems erect, mostly simple : 

 lower leaves distant, the upper densely crowded, open, ovate* 



