54 Mr. W. Mitten's Remarks on Mosses, 



employed by M. C. Miiller in his Synopsis, has been used, with 

 however some considerable modifications, and, unless otherwise 

 stated, the genera correspond with those adopted in that valuable 

 work. 



Tribe I. Andre^acejE. 



Cells of the leaves parenchymatous, but very minute and re- 

 mote. Capsule astomate, bursting regularly at the sides near 

 the apex. Sporular sac adhering throughout to the external wall 

 of the capsule. Calyptra mitriform. Small mosses, mostly of a 

 deep brown or blackish colour : growing on rocks. 



Genus 1. Andresea, Ehrh. 



Tribe II. Dicranace^e. 



Cells of the leaves partly prosenchymatous and partly paren- 

 chymatous, lax or more or less incrassated. Capsules mostly 

 inclining to a cylindrical form, and sometimes arcuate, asto- 

 mate, gymnostomate and peristomate. Teeth sixteen, each more 

 or less forked or divided down the middle. Calyptra mitriform 

 or dimidiate. Small or very large mosses, having mostly narrow 

 leaves, which are attenuated from a complicate or clasping base, 

 and with broad flattened nerves : growing on the earth, on rocks, 

 or on trees. 



Sect. 1. Leptotrichoidece. 



Leaves without enlarged cells at the base. 



Genus 1. Archidium, Brid. 



2. Bruchia, Schw., including Phascum exiguum, Hook, et Wils., 

 Eccremidium, eorund., and Garckea phascoides, C. Mutter (Dicra- 

 num, Hook.). 



3. Angstroemia, B. et S., C. Mutter, including Astomum, 

 Hampe. 



4. Trematodon, Rich. 



5. Brachyodus, Furnr. 



6. Campylostelium, B. et S. 



7. Seligeria, B. et S. 



8. Symblepharis, Mont. 



9. Leptotrichum, Hampe, including Lophiodon, Hook, et Wils. 



10. Distichium, B. et S. 



11. Eustichia, Brid. 



12. Drepanophyllum, Rich. 



Sect. 2. Dicranoidece. 

 Leaves with enlarged and mostly coloured cells at the base. 



13. Blindia, B. et S. 



14. Eucamptodon, Mont. 



15. Holomitrium, Brid, 



