80 



THE FERN BULLETIN 



Lycopodium lucidulum (Michx.) Shining Club- 

 moss. Low, clamp woods. Common throughout. I 

 have succeeded in growing this species in a small jar- 

 dinere partially rilled with water for six or seven 

 months. After several months it has a tendency to 

 bend over the edge of the receptacle and downward 

 as if in search of soil. 



Lycopodium obscurum (L.) Tree Club-moss. 

 Rich woods and wet thickets. Rather local, but oc- 

 curs throughout. 



Lycopodium selago (L.) Fir Club-moss. Rare. 

 Top of a mountain at the Delaware Water Gap in 

 Monroe county. The only record. 



Lycopodium tristachyon (Pursh.) Woods. 

 Rare. Fayette, Huntingdon, Monroe and Wayne 

 counties and probably elsewhere in the mountains. 



EQUISETACEAE 



Equisetum arvense (L.) Field Horsetail. 

 Roadsides, railroad banks, thickets, woods and 

 swamps. Everywhere. The varieties, decumbens 

 Meyer, diffusum Eaton, nemerosum A. Br., and 

 pscudosilvaticum Mildc have been collected. 



Equisetum fluviatile (L.) Water Horsetail. 

 Open swamps. Local, but likely to be abundant when 

 found. Tioga, Luzerne, Lehigh, Monroe, Northamp- 

 ton, Bucks, Bradford, Erie and Delaware counties. 

 Is to be expected in suitable situations throughout. 



Equisetum hiemale affine (Eng.) Scouring 

 Rush. Waste places. Rather local, but to be expected 

 throughout. Northampton, Bucks, Delaware, Chester, 

 Lancaster, Erie, Lehigh Berks, Bradford and Craw- 

 ford counties. 



Equisetum hiemale robustum (A. Br.) Great 



