52 NEW YORK STATE MUSEUM 



Polypodium vulg-are L. 

 Commofi polypody 

 On rocks and rocky banks. Common. Found occasionally in 

 swamps on trunks of trees. June-October. 



EQUISETACEAE 

 Equisetum arvense L. 

 Field horsetail 

 Along railways and roadsides. Common. May. 



Equisetum sylvaticum L. 

 Wood horsetail 

 Moist woods. Common. May. 



Equisetum fluviatile L. 

 E. limosum L. 

 ^wamp horsetail 

 Kiver shores. Common. May-June. 



Equisetum hyemale L. 



Scouring rush 



\Vet places and on banks. Frequent. May- June. 



LYCOPODIACEAE 



Lycopodium lucidulum Michx. 



Shining cliib moss 



in damp hemlock woods. Common. August-October. 



Lycopodium obscurum L. 

 Ground pine 

 Moist woods. Common. July- September. 



Lycopodium annotinum L. 

 Stiff cluh moss 

 In a thicket near Apalachin. Rare. September-November. 



Lycopodium clavatum L. 

 Running pine. Clul) moss 

 Found in thickets, open woods and along bushy roadsides. 

 Common. August-October. 



Lycopodium complanatum L. 

 Trailing Christmas green 

 Thickets, open woods, specially in groves of young coniferous 

 trees. Common. Autumn. 



