282 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



153. Barbula ruraliformis Besch. Plants robust: stems 3-5 cm. high, 

 branching: leaves squarrose spreading when moist, erect-contorted when 

 dry, acuminate, lamina extended along each side of point as a scarious and 

 denticulate membrane; point reddish in lower part, dentate: perichsetial 

 leaves strongly plicate: capsule and peristome as in B. ruralis. Husnot, 

 Muse. Gall. 115. Montana; Washington. 



154. Barbula brachyangia C. M.& Kindb. Dioicous: plants brown fer- 

 ruginous, 2-3 cm. high: leaves small, upper close, curved, short ovate- 

 oblong, obtuse or subacute, upper part scarcely longer than sheathing 

 base; margins slightly recurved in middle; broad cells hyaline, nearly uni- 

 form, costa rough at back; hair point long, denticulate, greater part pale 

 red: capsule small and short, oblong cylindric, sub-symmetric; pedicel red. 

 Mac. Cat. 59. On rocks: Becscie River. 



155. Barbula laeviscula Kindb. Tufts brown, radiculose at base 

 of leaves, 3-4 cm. high: leaves narrow Ungulate, carinate, nearly smooth 

 or indistinctly papillose at recurved borders; lower marginal cells of leaf- 

 base hyaline, short rectangular, in 1-2 rows, median yellow and porose, in 

 2-3 rows, inner larger, longer and hyaline; costa red, indistinctly papillose 

 at back, denticulate and hyaline near long hispid hair-point: capsule sub- 

 cylindric, attenuate at base to pedicel; peristome tube very much shorter 

 than pale teeth. Mac. Cat. 265. On rocks: Rocky Mountains, B. C. 



156. Barbula papillinervis C. M. & Kindb. Allied to B. ruralis: 

 upper leaves subacute, leaf-base narrowly margined, with pale yellow cells: 

 calyptra very much prolonged below capsule. Mac. Cat. 60. On rocks: 

 British Columbia; Labrador. 



157. Barbula intermedia Brid. Stems 1-2 cm. high, erect, bifurcate, 

 in compact olive green tufts, brownish below: leaves erect-spreading, not 

 squarrose, oblong spatulate, rounded or emarginate at apex, slightly con- 

 cave, not carinate, revolute on borders as far as middle; point shorter and 

 less dentate than in B. ruralis: perichaetial leaves acute: pedicel and cap- 

 sule shorter; peristome shorter, teeth once twisted. Husnot, Muse. Gall. 

 116. Montana; Washington. 



158. Barbula aciphylla Bruch & Schimp. Aspect of B. ruralis: 

 leaves spreading squarrose when moist, erect contorted when dry, oblong 

 lanceolate, very concave, revolute at border, acuminate, lamina prolonged 

 on each side of nerve, which is extended into a reddish hair furnished with 

 fewer teeth and more erect: flowers dioicous: perichaetial leaves not folded: 

 perigonial leaves not always ecostate, sometimes distinctly nerved: pedicel 

 strongly twisted to left at base, and to right in upper part; capsule oval or 

 oval-oblong; peristome shorter. Husnot, Muse. Gall. 115. On rocks: 

 Disco Island, Greenland; Gold Range, Selkirks, and Rocky Mountains, 

 British Columbia. 



159. Barbula leptotricha C. M. & Kindb. Differs from B. ruralis 



