20 



VERMONT MOSSES. 



B. pomiformis (L. ) Hedw. Wet shady banks and fissures of rocks. 

 IManchc'ster, G.; Peacliam, BL; Mt. Hor, F.; Hinesburgh, P.; 

 Woodstock, Miss Soule. 



PHILONOTIS Brid. 



p. fontana ( L. ) Brid. Wet rocks ; frequent. 



A careful study of all accessible material indicates that the Vermont 

 specimens of Philonotis are all P. fontana. 



Family XVI. Meeseaceae. 



MEESEA Hedw. 



M. triquetra (L. ) Aongst. {M.trisficha Br. &Sch. ) Shelburne Pond 

 Bog, P. 



Family XVII. Mniaceae. 



GYMNOCYBE Fries. 



G. palustris (L. ) Fries. [Aulacomnium pahistre Schwaegr. ) Cool, 

 boggy places ; frequent but rarely fruiting. 



MNIUM Dill. L. 



I. — Leaves not bordered 



I,eaves bordered. 

 2. — Margin biserrate. 



Margin serrate with solitary teeth. 



Margin entire. 

 3.— Leaves costate to apex, upper leaf cells longer than broad. 



Costa vanishing, upper leaf cells isodiametric. 

 4.— Costa vanishing below apex. 



Costa reaching apex. 

 5.— Capsules clustered. 



Capsules solitary. 

 6.— Syuoicous. 



Dioicous. 

 7.— Costa excurrent in upper leaves; leaf cells .018 — .030 mm. 



Costa percurrent; leaf cells about .015 mm. 

 8. — Basilar branches stoloniform. 



Basilar branches erect or stems simple. 

 9.— Leaves rounded at apex, raucronate; operculum rostrate, 



Leaves acuminate. 



slellare. 

 2. 



4. 

 8. 



3- 



punctatum. 



hymenophylloides. 



hornum. 



5- 



spinulosum. 



6. 



marginatum. 



7. 



pseudolycopodoides. 



orthorhynchum. 



9- 



Drummondii. 



rostratum. 



10. 



