Bartramia.] BKYACE^. 205 



the middle upward with obscure striae, furrowed-plicate when 



dry and empty ; lid small, convex, conical ; teeth either present, 



narrow, unequal and orange-colored, or absent and the orifice 



surrounded by a short thin pellucid membrane. — Bryol. Eur. 



t, 315. 



Hab. Colorado (Brandegee) ; Sitka (Eothrock); Flower Bay, Alaska 

 (Dall). 



3. B. striata, Brid. Tufts compact, glaucous-green above : 

 leaves open, erect, strict, straight and fragile when dry, lanceo- 

 late-subulate, serrate above ; meshes of the areolation smaller 

 than in the preceding species ; costa exeurrent into a spinescent 

 awn : flowers bisexual : capsule ovate-globose, erect, rarely 

 slightly cernuous, sulcate-ribbed when dry; pedicel strict, 

 obscurely tetragonal above and twisted to the right ; lid con- 

 vex, obtuse, short-mamillate and erose ; teeth either regular 

 and entire or irregular at the borders, perforated along the 

 dividing line, yellow : spores verrucose. — Muse. Recent, ii. 3. 

 132, t. 1, f. 5; Bryol. Eur. t. 316. 



Hab. Eocks near San Francisco (Bolander, Gibbons); Colorado 

 {Parry). 



* * Capsule cui'ved ; lid oblique ; peinstotne double. 



4. B. ithyphylla, Brid. 1. c. Stems longer than in the 

 last : leaves o])en-erect, strict, enlarged, Avhite and clasping at 

 base, linear-subulate and coarsely serrate above; costa thick, 

 gradually occupying the whole lamina above : flowers bisexual : 

 capsule globose-oblong, more distinctly curved and deej)ly fur- 

 rowed when dry ; lid conical-obtuse ; teeth reddish brown, irreg- 

 ularly perforated, sometimes bifid at the apex ; inner segments 

 yellow, cleft, much shorter than the teeth. — Bryol. Eur. t. 317. 



Hab. Fissures of rocks on mountains; White Mountains, Adiron- 

 dacks, Rocky Mountains, Sierra Nevada and Cascade Mountains, Sitka, 

 etc. Also rarely on the plains; Fayette County, Pennsylvania (Knight). 

 Varies with shorter fragile leaves, not as white at the base, and not as 

 abruptly narrowed above it. 



5. B. CEderiana, Swartz. Plants slender, loosely tufted, 

 dark green above : leaves open and recurved, soft, twisted when 

 dry, narrowly lanceolate, plicate, carinate and serrate toward the 

 apex ; borders more or less revolute ; costa narrow, percurrent, 

 serrate on the back above : flowers bisexual : capsule small, 

 globose or ovate-oblong, inciuwed and ribbed when dry ; pedi- 

 cel slender and slightly curved, of medium length ; lid and 



