ACOTYLJiDONS.- MUSCI. Uicru/tlttn. 131 



HAB. Among rocks and on banks. Angus-shire, G.Don. Appin, 

 Capt. Carmichael. King's Park, Edinb., &c., Mr. Arnott. 



9. W. crispula, steins divided, leaves from a broad base lanceo- 

 lato-sulmlate crisped when dry their margins incurved, capsule 

 ovato-elliptical, lid rostrate. Muse. Brit. p. 46. t. 15. 



HAD. Rocks. Pentland hills, &c., Mr. Arnott. 



10. W. cojilroversa, stems nearly simple, leaves lineari-subulate 

 crisped when dry their margins incurved, capsule ovato-ellip- 

 tical, lid rostrate. Muse. Brit. p. 47. t. 15. Bryum viridu- 

 lum, Lightf. p. 731. 



HAB. Banks, common. 



11. W-. recurvata, stems scarcely any, leaves subulate, capsule 

 broadly ovate, IVuitstalks curved, lid rostrate. Muse. Brit. 

 p.4J.'t. 15. 



HAB. Rocks. Habbie's How, Pentlands Cliesh hills, &c., Mr. Ar- 

 nott. On sandstone, banks of the Esk and Isla j Bilston burn, 

 G. Don. Above Blantyre priory, D. Don. 



12. W. acuta, stems branched, leaves subulato-setaceous sub- 

 secund rigid canaliculate, capsule turbinate, lid rostrate. Muse. 

 Brit. p. 48. /. 15. 



HAB. Rocks in alpine situations. 



17. DICRANUM, 

 Fruitstalks terminal (except in D. adianloides and D. taxifo- 



Hum). Peristome single, of 16 bifid equidistant teeth. Ca- 



lyptra dimidiate. Muse. Brit. p. 43. t, 2. 

 A. Leaves inserted in a lifari'ous manner. (Fissidens, Hedw.) 



1. D. In/aides, fruitstalks terminal, perichaetial leaves resembling 

 the cauline ones. Muse. Brit. p. 49. t. 16. Hypnum bryoideS, 

 Lightf. p. 739. 



HAB. Moist banks, common. 



2. D. adiantoides, fruitstalks lateral, perichaetial leaves ovate 

 slightly convolute pointed. Muse. Brit. p. 51. t. 16. 



HAB. Mossy grounds and wet banks. 



3. D. taxifolium, fruitstalks radical, perichsetial leaves ovate 

 sheathing involute pointed. Muse.' Brit. p. 51. t. 16. Hyp- 

 num taxif., Lightf. p. 740. 



HAB. Moist banks. 



B. Leaves inserted on all sides of the stem. 

 a. Leaves destitute of a nerve. 



4. D. glaucum, stems branched fastigiate, leaves erecto-patent 

 ovato-lanceolate straight nerveless entire, capsule ovate cer- 

 nuous, lid rostrate. Muse. Brit. p. 52. t. 16. Bryum glau- 

 cum, Lightf. p. 723. 



HAB. Pentfand hills, Mr. Arnott. Lorn, Capt. Carmich&el. Alpine 

 moors, common, D. Don. 



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