360 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



branch leaves more loosely disposed, sometimes ovate-oblong and narrow 

 areolate; inner perichaetial leaves narrower, longer filiform pointed, 

 nerveless: capsule small, sub-oblong, straight or curved; lid elongate-conic, 

 oblique-apiculate, or rostellate; pedicel very rough, purple: monoicous. 

 Mac. Cat. 231.— On rocks and on ground: Newfoundland; New Brunswick. 



5G8. Hypnum pseudo-fastigiatum C. M. & Kindb. — Allied to //. 

 re2:>tile, but alar leaf cells more numerous, chlorophyllose and dusky, not 

 decolorate; perichaetial leaves nerveless: capsule scarcely constricted below 

 mouth. Mac. Cat. 235. — On bases of vines in woods, British Columbia. 

 On rocks, Ontario. 



5(54. Hypnum fasti^iatum Brid.— Stems delicate, creeping, radiculose, 

 much divided, erect in middle of tufts, spreading around outside, short arc- 

 uate at summit; paraphyllia quite numerous, lanceolate or digitate: tufts 

 very large, depressed, yellowish green near surface, brownish within: leaves 

 falciform-secund, stem leaves oval-lanceolate, branch leaves a little nar- 

 rower, gradually narrowed into a long, sharp point, entire or superficially 

 denticulate, plain on borders or slightly revolute, hyaline at base; costa 

 bifurcate, narrow and very short; quadrate cells of basal angles quite 

 numerous, middle ones linear, attenuate; inner perichtetial leaves half 

 sheathing, acuminate, plicate, faintly bicostate: monoicous or dioicous: 

 capsule erect or oblique, oblong-cylindric, arcuate, contracted below 

 mouth; lid convex, apiculate, sometimes short rostrate; annulus narrow. 

 Husnot, Muse. Gall. 400. — On dry rocks: Rocky Mountains; Greenland. 



565. Hypmim Wagliornei Kindb. — Differs from H. fertile in large 

 and hyaline alar leaf cells, other basal ones not yellow: capsule tumid at 

 base, slightly curved: paraphyllia very broad. Mac. Cat. 234. — New- 

 foundland. 



566. Hypnum revolntum Mitt.— Stems 2-8 cm., ascending-erect, irreg- 

 ularly branched when tufts are compact, depressed and pinnate when loose; 

 yellowish green, ferruginous within: leaves falciform-secund, oval or 

 oblong-lanceolate, long acuminate, denticulate at summit, plicate when 

 dry, strongly revolute from base to apex; costa none or double and short; 

 cells of basal angles roundish quadrate or rectangular, rather numerous, 

 forming small auricles, median cells linear, relatively short (1:6-8); peri- 

 chaetial leaves strongly plicate: capsule sub-horizontal, rather large, oblong, 

 arcuate, strongly contracted below mouth. Husnot, Muscol. Gall. 402. 

 1894.— Morley and Hector, Rocky Mts.; Greenland. 



567. Hypnum revolntum Tillardi Ren. & Card. — Leaves short acumin- 

 ate, not or scarcely plicate, alar cells numerous, large. H. Heufleri Vil- 

 lardi R. & C, Bot. Centralbl. 44: 423. 1890.— Montana. 



568. Hypnum Canadense Kindb.— Intermediate between^, imponens 

 and H. sub-imponens : dioicous: densely cespitose, yellow or pale green: 



