Barhula.] BRYACE^. 129 



§ 6. ToRTUos^. Plants more robust: leaves longer, linear- 

 lanceolate, Jlexuous, cirrhate-crispate when dry ; basilar 

 areolation loose, hyaline: capsule thin ; basilar membrane 

 no7ie or scarcely visible. 



37. B. CSBSpitosa, Schwaegr. Monoecious : plants loosely 

 cespitose, variable in size, soft : leaves long-linear, nuicronate 

 by the strong yellowish costa, more or less undulate : male 

 flowers in axillary short pedicellate buds of two or three leaves : 

 capsule oblong-ovate, more or less incurved, subcylindrical, gib- 

 bous at base, reddish, on a long flexuous pedicel, twisted when 

 dry ; teeth very long, jjurple, twice or thrice closely twisted ; 

 annulus hone: spores minute, greenish, translucent, smooth. — 

 Suppl. i. 120, t. 31 ; Sulliv. Mosses of U. States, 27. J?, cir- 

 rhata, Brid. ; Bryol. Eur. t. 149. -S. hiimilis, Hedw. Spec. 

 Muse. 116, t. 25. Tortilla humilis, Brid. ; Lindb. Trichost. 251. 



Hab. Roots of trees in grassy places; common, especially in the hills 

 of the Southeastern States, and very variable. 



38. B. tortuosa, Web. & Mohr. Dioecious : in large, more 



or less compact tufts ; stems generally long (two to four cm.), 



dichotomous, tomentose-radiculose toward the base : leaves 



densely imbricate, twisted-crispate when dry, spreading and 



flexuous when moist, linear-lanceolate, undulate from a thin 



pale colored base, short-cuspidate by the stout excurrent costa ; 



pericha^tial leaves erect, half-sheathing, narrowly acuminate, 



whitish : capside ovate or oblong-cylindrical, more or less 



arcuate, soft, yellowish when full of spores, brown when old ; 



lid narrowly conical-rostrate ; teeth very slender, much twisted ; 



annulus none. — Bot. Tasch. 205; Bryol. Eur. t. 151. Bryuni 



torticosum, Linn, Tortukt tortuosa, Ehrh. ; Lindb. Trichost. 253. 



Hab. Goat Island, Niagara Falls; Lancaster, and Alleghany Moun- 

 tains, Pennsylvania; Ontario, Canada; New Brunswick, etc. 



39. B. fragilis, Bruch & Schimp. Dioecious: widely cespi- 

 tose ; stems erect, close and straight, simj^le and dichotomous, 

 tomentose-radiculose at base : leaves densely imbricate and 

 appressed, lanceolate-subulate by the excurrent semiterete 

 whitish costa, flat and crenulate on the borders, thin and 

 hyaline at base, minutely areolate, densely chloro2:)hyllose and 

 papillose on both faces in the upper part : capsule regular or 

 slightly incurved, ovate-oblong ; lid oblique, long-beaked from a 

 conical base ; teeth very slender and papillose, twisted two or 



