ACOTYLEDONS. — Musci. Polytvicluim. 125 



siile, fruitstalks scarcely longer than the leaves. JSlusc. Brit, 

 p. 20. t. 9. 

 Hab. Cow-dung by Loch Awen, Dickson. Scotch mountains, Mr. 

 Mackay. Cairn-gorum, on the turfy soil. Hook. Clova mountains, 

 G. Don. 



5. S. ampullaceiim, leaves ovato-lanceolate acuminate serrated, 

 apophysis inversely flagon-shaped twice as wide as the cap- 

 sule. 'Muse. Brit', p. 20. t. 9. Light/, p. 696. 



Hab. Bogs and dung of animals, on the jilains as well as in the 

 mountains. 



** Leaves obtuse. 



6. S. iiasculosum, leaves rhombo-rotundate obtuse the nerve dis- 

 appearing below the point, apophysis globose much wider than 

 the capsule. Muse. Brit. p. 21. SuppL t.\. 



Hab. Scotland, G. Don. Bog half-way up Ben Lawers, Mr. J. T. 

 Mackay. 



7. Frcelickianum, leaves ovate rounded at the points their nerve 

 disappearing before the summit, apo])hysis obovate much nar- 

 rower than the capsule. Hook. & TqtjI. Muse. Brit. /;. 2 1 . /. 9. 



Hab. On Ben High, Dickson. 



0. CONOSTOMUM. 



Fruitstalks tevmma.]. Peristome s,ing\e, of 16 equidistant teeth 



all united at their summits. Calyptra dimidiate. JSluse. Brit. 



p. 22./. 10. 

 I.e. boreale, stems rather short, leaves lanceolate acuminated 



carinated slightly toothed. Hook. & TayL. Mu^e. Brit. p. 22. 



t. 10. 

 Hab. Summits of the Highland mountains. Very fine upon Ben Lomond, 



10. POLYTRICHUM. 



Fruitstulks terminal. Peristorne single, of 32 or 64 equidistant 

 incurved teeth, their summits united by a horizontal mem- 

 brane. Calyptra dimidiate, small. Muse. Brit. p. 23. /. 1. 

 * Calyptra naked. 



1. P. undulntiim, leaves lanceolate undulate their margins plane 

 denticulated their nerve winged, capsule cylindrical curved, lid 

 subulate. Muse. Brit. p. 23. t. 10. Bri/um undulatuvi, Lip/itf. 

 p. 722. ' '^ ^ 



Hab. Moist shady banks, and in woods. 



2. P. Iiercynieum, leaves lanceolate rigid entire their sides invo- 

 lute, their nerve broad impressed with furrow.^, capsule oblong 

 suberect, lid conical. Muse. Brit. p. 24. t. 10. 



Hab. Mountains. Ben Lomond, near the summit, plentiful. 

 '^* Calyptra covered with succulent Jilaments. 

 t Leaves entire, their margins involute. 



3. P .piliferum, leaves lanceolato- subulate their margins involute 



