Barbiila.] BRYACE^. 131 



tubular base of the peristome very long ; annulus double. — 

 Prodr. 43 ; Bryol. Eur. t. 160, 161. Bryum, subulatimi^ Linn. 

 Sp. PI. 1116. Tortilla subulata, Hedw.; Lindb. Trichost. 242. 



Var. subinermis, Schimp. Leaves shortly mucronate by 

 the excurrent costa, with a less distinct border : capsule shorter 

 and shorter-j^edicellate. — Syn. 187. 



Var. mutica, Schimp. Leaves shorter, broader, blunt at 

 the apex, not margined, but reliexed on the borders. 



Var. angustata, SchimjD. Leaves longer and narrower, 

 linear with a narrow thick margin : capsule very narrow, cylin- 

 drical, subarcuate. 



Hab. Western Arizona (Bigelow), and at the Big Tree Grove, Cali- 

 fornia {Bolander); Rocky Mountains (E. Hall); Twin Lalies, Colorado 

 (Wolf & Rothrock); British Columbia (Ifacoun), a variety with entire 

 borders and long hair-like points. 



Lindberg, 1. c., remarks on the synonymy of this species and its nume- 

 rous varieties, that upon examination of numerous specimens of the dif- 

 ferent forms he cannot find one with characters distinct enough to sepa- 

 rate it as a species. The surface of the leaves is more or less papillose, 

 sometimes smooth, the costa passes above the apex in a short or long 

 mucro, the borders are marginate by one or two rows of longer yellowish 

 cells, or entire with an unchanged areolation, the lid and the capsule are 

 variable in length, the peristome whitish or reddish brown, and the 

 annulus broad or narrow. 



42. B. inermis, Muell. Differs from the preceding in the 

 leaves more solid, oblong, obtuse or blunt at the apex, the 

 borders not margined, very entire, revolute in the upper part, 

 the areolation smaller, more opaque and dense, and the capsule 

 shorter. — Syn. i. 624. Tortula inennis, Mont. ; Lindb. 

 Trichost. 241, B. suhidata, var. inermis, Bruch & Schimp. 

 Bryol. Eur. t. 161, in j^art, and 167. 



Hab. California, near the Rio Colorado (Bigelow). 



43. B. mucronifolia, Bruch & Schimp. Mode of growth 

 as in JS. suhidata, from which it differs in the leaves a little 

 shorter with immarginate borders reflexed toward the base, the 

 areolation looser, the costa excurrent into a longer smooth 

 point, the lid and the pedicel of the capsule shorter, the annulus 

 broader, the tubular often perforated membrane nearly half as 

 long, with shorter teeth, and the male flowers smaller. — Bryol. 

 Eur. t. 162. Tortula mucronifolia, Schwaegi*. Suppl. i. 136, 

 t. 34. T. suhidata, var. Icemfolia, Lindb. Trichost. 242. 



Hab. Bare ground, limestone rocks, banks of streams, etc. ; not rare. 



