120 FERNS AND THEIR ALLIES 



It is from one to two inches in length, usually 

 fleshy, ovate or somewhat triangular in form, 

 deeply cut into obtuse divisions which vary much 

 in form ; sometimes rounded and entire, incised, 

 or deeply cut into narrow, toothed segments. 



The entire plant is from three to ten or 

 twelve inches high. It grows in rich, moist, 

 grassy woods, and swamps, and is found only 

 occasionally. It is sometimes known as Meriden 

 Moonwort. 



The fertile portion is two or three pinnate, 

 often much branched, bearing rows of sessile, 

 distinct sporangia which mature in June and 

 July. 



B. tenebrosimi is a very small form which is 

 rather rare, or possibly overlooked, being only 

 from one to two inches high. It is found in 

 moist, mossy places. 



The fertile portion is simpler than that of the 

 type. 



LANCE-LEAVED GRAPE PERN. 



Botrychium lanceolatunt. 



The sterile portion is sessile near the sum- 

 mit of the common stalk, which is from three 

 to nine inches high. It is in three primary 

 divisions, or broadly triangular in form. The 

 divisions are deeply cut into acute, lanceolate, 

 oblique lobes, which are incised or toothed. 



