BARNES NORTH AMERICAN MOSSES. 345 



short acute, striate, decurrent, indistinctly denticulate above or from mid- 

 dle; cells dilatate, principally the lower and the uppermost, alar and basilar 

 finally orange-reddish, alar rarely greater, costa short and simple. Mac. 

 Cat. 201. New Brunswick: Ontario; Revelstoke, B. C. 



475. Brachythecium platycladum C. M. & Kindb. Tufts densely 

 cohering, bright green, shining: stem irregularly branching; branches short 

 obtuse, complanate: leaves loosely imbricate or patent, nearly flat, long 

 decurrent, distinctly auriculate, faintly striate, broad, ovate, suddenly and 

 generally short acuminate; borders not recurved, faintly sinuolate or sub- 

 entire below middle, more distinctly denticulate above; cells pale, upper 

 narrow, lower near base dilated, alar large and well-defined; costa short, 

 reaching little above middle: capsule sub-oval, faintly curved; teeth dark 

 yellow, entire at borders; cilia not apendiculate; lid unknown: dioicous. 

 Mac. Cat. 195. On stones: Ottawa, Ont. 



476. Brachythecium spurio-rutabulum C. M. & Kindb. Differs from 

 B. rutabulum in dioicous inflorescence: leaves distinctly plicate, longer 

 cuspidate: seta rough, short. Tufts dense: stems pinnate, and creeping 

 leaves shining, when dry very spreading, loosely disposed, long decurrent 

 borders recurved below the middle, faintly denticulate. Mac. Cat. 197 

 and Sicamous. On bases of trees: Burrard Inlet, B. C. 



477. Brachythecium nan opes C. M. Kindb. Allied to B. populeum 

 in habit, peristome, monoicous inflorescence, pedicel faintly rough above, 

 long and subpercurrent costa of leaves: differs in stems not creeping, nearly 

 without rhizoids, branches unilateral, leaves smaller and narrower at base, 

 stem leaves long filiform apiculate, sub-entire and not or indistinctly re- 

 curved at borders, lower decurrent: capsule smaller, pedicel shorter, peri- 

 stome pale orange, cilia long and indistinctly appendiculate. Mac. Cat. 

 201. On earth: Revelstoke, B. C. 



478. Brachythecium traehypodium Sch. Stems 3-5 cm. high, de- 

 cumbent, furnished with branches and branchlets: tufts golden yellow, or 

 greenish in part: leaves erect, loosely imbricate, oval or long lanceolate, 

 long acuminate, denticulate, costate to middle, faintly plicate; cells of basal 

 angles quadrate, others linear: some perichaetial leaves abruptly, others 

 gradually acuminate: monoicous: seta robust, very papillose; capsule al- 

 most erect, or oblique, oval or oblong, contracted below mouth; lid 

 convex-conic, obtuse; peristome of B. velutinum; calyptra reaching base 

 of capsule. Husnot, Muse. Gall. 328. Greenland. 



479. Brachythecium reflexum Paciiicum Ren. & Card. More robust, 

 stem leaves larger, ovate-lanceolate, hardly triangular, somewhat acumi- 

 nate, margin sub-revolute at base. Hedwigia 32: 262. 1893. Mt. Hood, 

 Oregon. 



480. Brachythecium reflexum Demetrii Ren. & Card. Habit stronger, 



