—103— 



Woodwardia Virginica Sm. Chain fern. Frequent in swamps 

 from Long Island to the western part of the State. 



Equisetaceae. 



Equisetum arvense L. Field Horsetail. Very common in 

 either wet or dry soil. Mr. Eaton describes a dozen different 

 forms. , 



Equisetum Huviatile L. Borders of lakes and ponds. Not un- 

 common. 



Equisetum palustre L. Swamps near Buffalo, Clinton, accord- 

 ing to Eaton. Rare. 



Equisetum hiemale L. Scouring Rush. Very common in 

 swampy and gravelly places. Eaton describes seven forms. 



Equisetum hiemale intermedium A. A. Eaton. Oneida Lake, 

 Dr. I. V. Habcrer. Rare. 



Equisetum seirpoides Michx. Shaded ravines and sphagnum 

 marshes. Widely scattered but scarce. 



Equisetum sylvaticum L. Wood Horsetail. Marshes and bor- 

 ders of woods. Not uncommon. Eaton enumerates seven 

 forms. 



Equisetum varxegatum Schleich. Brisbin Swamp. Coville; 

 Oriskany and shores of Lake Ontario, Paine; Owasco Lake, Prof. 

 I. H. Hall; along W. Canada Creek, near Herkimer, /. V. 

 Haberer. 



ISOETACGAE. 



Isoetes Amesii A. A. Eaton, sp. n. (/. riparia Canadensis 

 Engelm. Also /. Dodgei Eaton.) Peekskill is the only known 

 locality in this State, but the species is very common in New 

 England. 



Isoetes echinospora Braunii Engelm. The common form in 

 New York State. 



Isoetes echinospora muricata Engelm. Lake Luzern, A. A. 

 Eaton. Rare. 



Isoetes Engclmanni A. Br. Abundant along the Susquehanna 

 river in Broome and Tioga counties, Clutc. New York City, 

 Buchheister. 



Isoetes macrospora Durien. Catskill Mts., Schweinitz, accord- 

 ing to A. A. Eaton. (I. lacustris pauper -cula Engelm.) Rare. 

 Lycopodiaceae. 



Lycopodium alopecuriodes L. Babylon, L. I., Clute. Rare. 



