Barbula.] BEYACE^. 123 



Hab. Texas, Dallas County [J. Boll). 



Much like the last, but differing in the long teeth of the conical thin 

 peristome, appendiculate like those of a Fontinalis. 



20. B. brachyphylla, Sulliv. Plants long, densely cespi- 

 tose, fastigiately-branching, radiculose their whole length : 

 leaves oiDcn, ovate, narrowed to the obtuse apex, thick, dark 

 brown, the borders recurved all around ; costa stout, percurrent : 

 calyptra short : capsule cylindrical, erect ; lid long-rostrate ; 

 teeth twisted half-way around or scarcely so much, attached to 

 a very narrow membrane. — Pacif. R. Rep. iv. 186, t. 2 ; Sulliv. 

 & Lesq. Muse. Bor.-Am. Exsicc. n. 100°. 



Hab. Near Benicia, California (Str/eZoio). 



21. B. purpurea, Muell. Differs from the preceding 

 species in its small rigid purple tufts, the short stems divided 

 above into a few short branches, naked below : stem-leaves few, 

 open, spreading when moist, purplish, oblong and broader in 

 the lower part, then obliquely lanceolate, blunt at the apex, the 

 costa thick, purple, canaliculate, the cells of the areolation 

 thick, small, reddish, quadrate, in the upper part rounded, 

 smaller and more oblique : capsule small, ovate, with a broad 

 orifice when deoperculate, the calyptra long, embracing its base. 

 — Regensb. Flora, Iviii. 78 (1875). £. hrachr/jyhijlla, Sulliv. & 

 Lesq. Muse. Bor.-Am. Exsicc. (ed. 2),n. 135, in part, fide Muell. 



Hab. On rocks near Oakland, California, mixed with B. virescens 

 (Bolander). 



22. B, rigidula, Schimp. Tufts brown or dirty green ; 

 stem straight : leaves open or a little recurved, long-lanceolate, 

 carinate, with borders recurved in the upper part, revolute in 

 the lower, nearly smooth and very entire ; basilar areolation 

 rectangular, narrow, the u]iper minutely quadrate, distinct ; 

 costa percurrent ; perichtetial leaves scarcely distinct from the 

 upper stem-leaves : calyptra long-beaked, often half-contorted : 

 capsule erect or slightly curved, nearly cylindrical, chestnut- 

 color, polished ; pedicel straight, reddish ; lid short-beaked, 

 oblique ; teeth attached to a short membrane with nodose seg- 

 ments, free or partly coherent, oblique or slightly twisted ; 

 annulus simple, narrow. — Syn. (ed. 2), 206. Trichostomu'm 

 rigidulum. Smith, Fl. Brit. iii. 1238; Bryol. Eur. t. 176. 

 Tortula rigidula., Lindb. Trichost. 249. 



Hab. Rocky Mountains (Brummond) \ Russian River, California 

 (Bolander)\ Vancouver Island (Lyall). 



