ACOTYLEDONS. Musci. Pofytrichum. 125 



sule, fruitstalks scarcely longer than the leaves. Muse. Brit, 

 p. 20. t. 9. 



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

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

 G. Don. 



5. S. ampullaceum, leaves ovato-Ianceolate acuminate serrated, 

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

 sule. 'Muse. Brit', p. 20. /. 9. Lightf. p. 696. 



HAB. Bogs and dung of animals, on the plains as well as in the 

 mountains. 



** Leaves obtuse. 



6. S. vasculosum, 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. 

 Mackaij. 



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

 disappearing before the summit, apophysis obovate much nar- 

 rower than the capsule. Hook. & Toy 1. 'Muse. Brit. p. 2 1 . t. 9. 



HAB. On Ben High, Dickson. 



9. CONOSTOMUM. 



Fruitstalks terminal. Peristome single, of 16 equidistant teeth 



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



p.22.t. 10. 

 1. C. boreale, stems rather short, leaves lanceolate acuminated 



carinated slightly toothed. Hook. & TayL Mu*c. Brit. p. 22. 



t. 10. 

 HAB. Summits of the Highland mountains. Very fine upon Ben Lomond. 



10. POLYTRICHUM. 



Fruitstalks terminal. Peristome 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. undulatum, leaves lanceolate undulate their margins plane 

 denticulated their nerve winged, capsule cylindrical curved, lid 

 subulate. Muse. Brit. p. 23. t. 10. Bryum undulatum, Lightf. 

 p. 722. 



HAB. Moist shady banks, and in woods. 



2. I*, hercynicum, leaves lanceolate rigid entire their sides invo- 

 lute, their nerve broad impressed with furrows, capsule oblong 

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



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

 ** Calyptra covered with succulent filaments. 

 t Leaves entire, their margins involute. 



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



