THE FERN BULLETIN 



81 



Scouring Rush. Waste places. Rare. Occurs in 

 Delaware and Bucks counties. Probably the most 

 eastern stations, though according to Eaton's Mono- 

 graph, it is accredited to New Jersey by Milde. 



Equisetum laevigatum (A. Br.) Smooth Scour- 

 ing Rush. Reported from Northampton county, but 

 probably a mistake for Equisetum hicmale interme- 

 dium A. A. Eaton which extends across New York 

 and New England, but has not yet been recognized in 

 this State. 



Equisetum litorale (Kuhl.) Shore Horsetail. 

 River banks. Rare though likely to be abundant when 

 found. Northampton, Bucks, Delaware, Lancaster, 

 York, Allegheny and Dauphin counties. Apparently 

 not reported south of Pennsylvania. 



Equisetum litorale elatius (Milde.) Rare. Oc- 

 curs at Safe Harbor, Lancaster county, along the 

 lower Susquehanna according to Eaton's Monograph 

 (Fern Bulletin, April, 1902.) 



Equisetum pratense Ehrh.) Shade Horse-tail. 

 Sandy thickets along streams. Rare. Reported from 

 Clearfield county, in central part of the State. 



Equisetum scirpoides (Michx.) Dwarf Scouring 

 Rush. Open woods. Credited to the State by various 

 contemporary botanical works. I have been unable to 

 locate specimens or definite records. The species is 

 said to range from forty degrees northward, and 

 should be looked for in the northern section of the 

 mountain district. 



Equisetum silvaticum (L.) Wood Horse-tail. 

 Swamps and wet woods. Local, but occurs through- 

 out. 



Equisetum silvaticum serotinum (Milde.) 

 Swamps and wet woods. Erie and Huntingdon coun- 



