— 344 — 



stem-leaves suboblohg subobtuse short-acuminate, dentate above 

 middle; lower leaves oval obtuse entire; shoot-leaves also entire. 

 Capsule oval-oblong not strangulate, with not or slightly dilated, 

 mouth; lid rostellate or apiculate; teeth brownish. Tufts green 

 or finally brownish green us. dense, often high. — On earth. 

 Eur. common. Sweden, Switzerl.! Amer. Can.: Macoun. 

 22.M.Niagarie Kindb. cat. Canad. m. 



Leaves gen. indistinctly decurrent. Upper stem-leaves lanceo- 

 late acuminate dentate to below middle, crowded and not de- 

 current; costa excurrent. Lower leaves oblong acute more or 

 less dentate. Upper shoot-leaves also dentate. Capsule eylin- 

 dric-fusiform strangulate wide-mouthed; lid obliquely rostrate; 

 teeth yellow. Tufts loose dark green. — On earth under trees 

 near water r. Amer. Can. Niagara: Macoun. 



B. Dioecious (with separate male plants). Stem gen. not 

 radiculose between leaves. Upper leaves us. dentate all around. 



a. Leaves crisped (princ. on long us. decumbent stolons), 

 gradually larger upwards on fertile stem; costa not excurrent. 

 23.M.riparinm Mitten. — M. ambiguum H. Mueller. 



Leaves oval-oblong subobtuse, dentate all around, often crow- 

 ded and not decurrent on fertile stem; shoot-leaves small distant 

 us. long- decurrent; cells larger than in M. orthorhynchum. Cap- 

 sule straight oblong-oval; teeth pale; lid rostellate. Stem not 

 high. — Wet rocks r. Eur. Norway, Switzerl.! Sweden: E. Ny- 

 man. Amer. Can.: Macoun. 

 24.M.nnibratile Mitten; Sullivant icon. m. 



Leaves narrowly lanceolate acuminate very distant and long- 

 decurrent. Capsule curved suboblong large often with long 

 neck; teeth yellow; lid apiculate; pedicel often very long. — 

 Wet rocks r. Amer. Can. Brit. Col.: Macoun. 



b. Leaves faintly curled. Stem without decumbent stolons. 

 aa. Leaves distant long-decurrent. Tufts loose us. high. 



25.M.Ij'COpodioides Hooker. — Bryum Hook.; Malum Schwaegr. 



Leaves lanceolate-acuminate gradually larger upwards; costa 

 gen. excurrent. Capsule curved suboblong, larger than in M. 

 orthorhynchum; teeth dark yellow or pale brown; lid rostellate. 

 — Wet alp. rocks r. Eur. Switzerl. near Spluegen! {Asia, Sikkim: 

 Wichura, com. Mus. Berolin.). 

 26.M.decurrens C. M. et Kindb. 1. c. 



Lower leaves small oval-oblong; upper suddenly larger, lan- 

 ceolate acute less distant; costa not excurrent. Capsule straight 

 suboval; teeth dark yellow; lid apiculate. Stem often very 



