AND VICINITY. 123 



CRYPTOGAMIA. Flowerless Plants. 



III. ACROGENS. Top-growers. 



EQUISETACE^. Horsetails. 



BQUISETUM, L. Eguiseta. 



ARVENSE, L. Field Equisetum. 



River and ravine-sides, low grounds along streams, embankments of rail- 

 roads, sometimes in meadows. Common. April. 



STLVATICUM, L. Woodland Eguisetuvi. 



Shady banks, wet woods, arbor-vitse swamps. Abundant. May. 



LIMOSTTM, L. Mud Equisetum. 



Low river-banks, miry marshes. Throughout the valley of the Mohawk. 

 Occasionally in swamps on the hills. ■ Frequent. June. 



HTEMALE, L. Winter -lasting Equisetwn. 



Springy sidehills. Common, May. 



VARIBGATUM, Schleicher. Variegated-sheathed Equisetum. 



Sandy shores. Steep banks of the Oriskany creek above the Dexter factories, 

 near the base of the slope, in shade. On an island in Owasco lake, Cayuga 

 county, /. H. Hall. All along the shore of Lake Ontario, from Sodus point, 

 "Wayne county, to Braddock's bay, Monroe county. Rare. April, May. 



SCIRPOIDES, Michaux. Scirpics-like Equisetum. 



Wet banks and cedar swamps. College-hill, Clinton. Near the Chenango 

 canal, three miles southwest of Utica. On the flats of the Mohawk, in the 

 deep swamp between Utica and Frankfort. Fairfleld, Herkimer county; also 

 common in many places in Bridge water, Gray. Scarce. April. 



FILICES. Ferns. 



POLYPODIUM, L. Polypods. 



VULGARE, L. Common Polypodium. 



Rocks, ravine-sides, swamps. Frequent. August ^ October. 



PHEGOPTERis, L. Bcech Fern. Wood Polypodium. 



Shady ravines, stream-bottoms, moist woods. Abundant. June, July. 



HEXAGONOPTERUM, Michaux. Six-angled-winged Polypodium. 



Moist woodlands. Herkimer. Grai/. Between New-Ha.rtford and Paris hill. 

 Auburn, Cayuga county, /. H. Hall. Lodi, Seueca county, Gray. Gorham, 

 Ontario county, Sartwell in herb. Ham. Coll. Abundant in the valley of Ge- 

 nesee river. Scarce. July, August. 



DRTOPTERis, L. Tree-like Polypodium. 



Moist banks along streams. Common in cedar swamps. 



Abun(iant, June, July. 



