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S.C.straminenm Dickson. — Hypnnm Uicks. 



Leaves oval-oblong nearly crowded or distant, smaller than 

 in G. cor di folium, sometimes with red rhizoids at apex; cells 

 gen. sublinear except the large red or hyaline alar and the 

 often round-oval apical; costa more or less abbreviate. Capsule 

 somewhat large; lid mamillate. Stem sparingly divided; bran- 

 ches long not rigid. Tufts gen. pale green, sometimes whitish 

 or brownish, not radiculose. Dioecious. — Peat-bogs. Eur. 

 common. Sweden, Norway, Switzerl.l Amer. Can. not r.: Ma- 

 coun; Moser; Waghorne. 



* C.laxifolium Kindb. n. subsp. 



Leaves narrower, very distant and longer decunent; cells 

 wider; costa subpercurrent. — Amer. GreenL: Vanhoeffen. 



* C.nivale Lorentz. — Hypnum Lor.; Schimper. 



Leaves smaller and crowded, broadly oval-oblong, appressed 

 when dry; cells often somewhat dilated. Branches us. whitish 

 or yellowish green. — Alpine bogs r. Eur. Norway! Austria: 

 Lorentz. 



B. Leaves not decurrent. 

 4.C.sarment0SUm Wahlenberg. — Hypnum Wng. 



Leaves red or brown-red (r. green) somewhat small and 

 crowded, nai-rowly ovate-oblong or oblong-lanceolate; cells linear 

 except the short dark red near base and the larger alar; costa 

 gen. red and subpercurrent. Capsule smaller than in C. cordi- 

 folium; lid sometimes rostellate. Stem irregularly divided or 

 subpinnate with short branches. Dioecious. — Swamps princ. 

 in alps, gen. r. Eur. Norway (common and not r. fruiting)! 

 Amer. Can.: Macoun; Waghorne. 



IL Limnobion Kindb. 

 5.C.paIustre L. — Hypnum L. 



Leaves subovate often small, us. crowded, sometimes decurrent; 

 cells sublinear (or the upper oblong-lanceolate) except the often 

 orange- colored alar; costa variable, sometimes wanting. Stem- 

 leaves obtusate subacute; branch-leaves gen. acute or short-acu- 

 minate. Capsule not large often curved; lid acute or apiculate. 

 Tufts UB. dirty green. — In or near mostly running water, 

 common. Eur. Sweden, Norway, Switzerl., Italy! Amer. Can.: 

 Macoun; Moser. 



III. Pi-'eud-Acrocladium Kindb. 

 e.C.cuspidatiim L. — Hypnum L.; Acrocladium Lindb. 



Stem-leaves broad-ovate obtuse or ovate-oblong subacute, 

 subdecurrent; upper cells oblong-lanceolate, middle linear, lower 



