364 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



Eur. 778. 1876. On stones: Ste. Anne des Monts river, Gaspe Co., 

 Quebec; Gunn river, Anticosti. 



586. Hypnum torrentis C. M. & Kindb. Differ from H. Ooulardi in 

 stems filiform, very rigid: leaves smaller, sub-circular, crenulateall around, 

 reflexed at basal margins; costa thick and nearly percurrent: differs also 

 from H. arcticum in loosely disposed decurrent leaves with large, angular 

 cells. Mac. Cac. 243. -On sloping limestone rocks: British Columbia. 



587. Hypnum Norve^icum Sch. Appearance of H. arcticum but 

 much smaller and more delicate; stems depressed, branches erect or ascend- 

 ing: leaves erect-spreading or sub-secund, small, oval or oval sub-orbicular, 

 sinuolate, obtuse; costa very short, bifurcate; cells of basal angles quad- 

 rate or rectangular, not forming distinct auricles; middle quite short, linear- 

 sub-hexagonal: capsule oblique, oval or oblong; lid convex, very shortly 

 apiculate; annulus large. Husnot, Muse. Gall. 413. Greenland. 



588. Hypnum Columbico-palustre C. M. & Kindb. Differs from H. 

 palustre in leaves longer apiculate, faintly denticulate; margins recurved 

 below at one side; alar cells dilated, well-defined; costa stout, vanishing 

 above middle. Mac. Cat. 241. On rocks: British Columbia. 



589. Hypnum polare Kindb. Loosely cespitose, tufts pale green, soft: 

 secondary stem erect, fastigiately branched, flaccid, eradiculose: leaves 

 loosely disposed, erect-spreading and slightly secund, ovate-oblong, grad- 

 ually short and acute acuminate, strongly concave, margin erect, thin, at 

 basal angles very slightly decurrent, not excavate, obsoletely crenulate 

 only at very apex; costa simple, sub-terete, vanishing below apex; cells 

 slightly hyaline, rhomboidal, 2 to 3 times as long as broad, middle cells 

 longer and narrower, basal cells wider, alar cells few, hexagonal-rectangu- 

 lar, hyaline or slightly chlorophyllose. Schimp. Syn. 780. 1876. Green- 

 land. 



590. Hypnum eugyrium Miquelonense R. &. C. Leaves smaller, 

 acumen short, obtuse or sub-obtuse; cells of basal'angles hardly distinct. 

 Revue Bryol. 20: 28. 1893. Miquelon Is. 



591. Hypnum eugyrium Mackayi Sch. Plants more robust; leaves 

 erect-imbricate, distinctly denticulate at summit; costa simple or double, 

 passing middle; auricles formed of smaller cells. Husnot, Muse. Gall. 

 412. Tennessee. 



592. Hypnum ochraceum flaccidum Milde. Stems long, loosely foliate: 

 leaves throughout spreading every way, uniform brown, broad lanceolate, 

 long pointed; costa long, double. Bryol. Siles. 376. 1869. Montana; Ore- 

 gon; Washington. 



593. Hypnum pseudo-montanum Kindb. Nearly allied to H. mon- 

 tanum: differing principally in stem longer and more robust: leaves larger 

 and thinner, more loosely disposed, longer decurrent, not distinctly dentic- 



