43 



Meadow. Near Freeville. Round Marsh. Locke Pond." Loc. 

 Herb.: West Dryden Swamp; (also, Bergen Swamp, and Oswego, 

 swamp). 



Not found by the writer. 



8. DENTARIA (Toum.) L. 



General Discussion. 



This genus is the only one of which any really 

 intensive study has been made* Two observations made at 

 Beeohwoods early in May, 1912, led to this undertaking - 

 the astonishing variety of leaf -form shown by Dentaria 

 laciniata there, and the presence of typical and doubtful 

 specimens of the supposedly "scarce" D. maxima . 



Further exploration of this and other localities 

 yielded remarkable results. Almost every favorable 

 locality visited added to the number of modifications 

 and combinations of Dentaria characters, and, with such 

 ravines as Big Gully and the ravine of Butternut Cr. un- 

 vlsited, it is extremely improbable that the^ present ex- 

 tensive collection is complete* The evidence indicates, 

 first, a remarkable amount of variation in specific char- 



