collections from the state reported as B. tenebrosum 

 A. A. Eaton. Small forms of B. Matricaria folium are 

 sometimes difficult to separate from this. 



Botrychium matricarice folium Braun. Rare or local 

 but reported from a number of widely scattered stations. 

 Growing in rich leaf mould as does the following 

 species. So far as observed its spores are matured at 

 an earlier date than those of B. lanceolatum. 



Botrychium lanceolatum Angs. Rare, but widely 

 distributed, often growing with or near B. matricarice- 

 folium. 



Botrychium ohliquum Muhl. Grape-fern. Widely 

 distributed and frequent in moist meadows and pastures, 

 or sometimes in dry sandy soil. This passes by a variety 

 of intergrading forms into the following : 



Botrychium ohliquum var. dissectum Clute. Occa- 

 sionally seen in its extreme form with finely dissected 

 pinnae when it is very distinct from the type in appear- 

 ance. 



Botrychium ternatum var. intermedium D. C. Eaton. 

 Occasional in rich woods throughout. Sometimes large 

 when it is called var. australe and in shaded places with 

 a small and thinner frond approaches var. Oncidense. 



Botrychium virginiaum L. Rattlesnake Fern. In 

 rich woods frequent throughout. Sometimes seen with 

 two fertile sections to the frond. 



MARSILIACE^E. 



Marsilia quadrifolia L. Plentiful in Bantam Lake, 

 Litchfield, its only native habitat in this region, though 

 it has been introduced at other stations. 



LYCOPODIACE.E. 



Lycopodium Selago L. Fir Club-moss. Known 

 only from cool shaded ravine, New Haven (J. A. Al- 

 len, 1879). Has been collected at Mt. Holyoke, Massa- 

 chusetts, and should occur at intermediate stations along 

 our trap dykes. 



