BARNES NORTH AMERICAN MOSSES. 313 



ulate above on the back by the prominence of cell-apices; margin narrowly 

 revolute but flat toward point, strongly serrate above; cells reddish and 

 rectangular at base, oblong-hexagonal in middle, ovate-hexagonal or rhom- 

 boidal in upper part, the marginal elongated, linear flexuose, forming a 

 more or less distinct border; capsule inclined or pendulous, narrowly cylin- 

 drical, incurved, constricted below mouth and tapering to a long attenuate 

 neck; lid convex or sub-conic, apiculate; teeth yellow, densely trabeculate, 

 segments split, cilia 1-3, appendiculate; aunulus of 3-4 rows of cells, very 

 broad: dioicous. Bot. Gaz. 19: 44. 1894. — Moist sunny bluffs: Portland, 

 Oregon; California. 



302. Bryuiu microstefrium Sch.— Synoicous: aspect of B. sub-rotun- 

 dum: tufts very low, thick, green: lower leaves small, distant, oval-lance- 

 olate, costa ending below the point; comal leaves numerous, crowded, 

 almost imbricate, when moist erect spreading, outer oval-lanceolate; inner 

 larger, oblong lanceolate, long acuminate, costa excurrent, marginate, 

 border plane, entire, sometimes slightly recurved; cells thin walled, above 

 narrowly rhombic, at base violet purple, rectangular: seta twisted, curved 

 above; capsule nodding, with narrower and shorter neck, oblong-pyriform, 

 mouth symmetric, small: when dry neck furrowed and capsule rugose; lid 

 conic, apiculate; teeth faintly bordered, weakly papillose, abruptly nar- 

 rowed above; endostome almost hyaline, segments split along the ke 

 cilia three, appendiculate. Limpr. Laubm. 2:348. — Greenland; Labra- 

 dor. 



303. Bryiim pallescens laxifolium Kindb. — Leaves loose, not glossy, 

 long and narrow; upper cells narrow: spoi-es small. Mac. Cat. 124. — In 

 damp woods: Kananaskis Pass, Rocky Mts. 



304. Bryum pallescens longifoliuiu Kindb. — Leaves dense, glossy, 

 very long attenuate; upper cells narrow: spores small. I. c. — Wet gravelly 

 soil: Morley, Rocky Mountains. 



305. Bryum uitidnlum Lindb. — Synoicous: tufts low and dense, above 

 yellowish green, below reddish, within densely brown radiculose: stem 

 scarcely branched, leaves gradually larger above, broad oval, acute, nar- 

 rowly marginate, margin revolute to recurved point, entire; costa thick, 

 nearly percurrent; cells small, thick walled, pitted, upper irregular rhom- 

 bic, basal rectangular, reddish: capsule pendent, small, oval-pyriform, 

 gradually narrowed into neck, large-mouthed, pale yellow, shining; lid 

 convex, with long point; annulus triple; peristome large, teeth pale yellow, 

 lanceolate-acuminate; endostome free, basal membrane one-half height of 

 teeth, segments split along keel, cilia 2-3, appendiculate. Limpr. Laubm. 

 2: 347.— Greenland. 



306. Bryum teres Lindb.— Autoicous: tufts low, yellowish green, shin- 

 ing: leaves erect, not decurrent, broad oval, obtuse, the upper with small 

 points, concave, not marginate, entire; lower leaves with plane margins, 



