28 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Botrychium ramosum (Roth) Aschers. (having many 



branches). 

 Botrychium matricariaefoUum Braiin. 

 Botrychium neglectum Wood. 



Rich woods. Rare or local, but found throughout the 

 state. June. 



Small forms of this are difficult to separate from Botry- 

 chium simplex. 



Botrychium obliquum Muhl. (oblique). 



Botrychium tcrnatum S\v., forma obliquum Milde. 

 Grape Fern. 



Occasional or frequent. Meadows, woods and old pas- 

 tures in either dry or moist ground. Sept. 



The var. elongatum Gilbert & Haberer (elongated), 

 and the var. dissectum (Spreng.) Clute (finely cut), 

 Botrychium dissectum Spreng., are occasional, growing with 

 the typical form. 

 Botrychium tcrnatum (Thunb.) Sw. (three-parted), var. in- 

 termedium D. C. Eaton (intermediate). 

 Botrychium obliquum Muhl., var. intermedium Underw. 

 Botrychium ternatum Sw., var. australe D. C. Eaton. 



Rare. Rich woods: Union and Southington (Bissell), 

 West Hartford (Harger), Granby (I. Holcomb), Meriden 

 (Andrews), New Milford (C. K. Averill & E. H. Austin), 

 North Canaan (M. B. Tobey). Sept. A small form of this 

 approaching in appearance Botrychium obliquum^ var. onei- 

 dense occurs at Granby (I. Holcomb), Plainville (Andrews), 

 and Plymouth (Bissell). 



Botrychium virginianum (L.) Sw. 

 Rattlesnake Fern. 



Occasional or frequent. ]\Ioist rich woods. June. 



The fruiting' fronds are occasionally forked, and bear two, 

 three or four fertile panicles. 



MARSILEACEAE. 



MARSILEA L. 



Marsilea quadrifolia L. (four-leaved). 



Local. Plentiful in Bantam Lake, Litchfield, its only 

 known native habitat in North America. It has been intro- 



