47 



ently Is seldom absent In any eonsiderable apparently 

 favorable area In the vicinity of Ithaca. It occurs fre- 

 quently, the often not in great luxuriance » on steep wood- 

 ed hillsides where the soil is rather moists D» laclniata 

 seems less common* and more closely restricted to low 

 ground; a decided exception to the nkle seems to be af- 

 forded by the occurrence of a few plants on moderately 

 wooded land on the stetep slope toward Cayuga L., south 

 of Esty*s Glen - this being, in fact, the only place where 

 the species was found fruiting at all freely. At Beech- 

 woods D. laclniata grows in remarkable abundance and vig- 

 or, but apparently rarely produces seed, and the other 

 species are also found there. Shurger's Glen, the other 

 locality where Dentaria was found in great abundance, 

 seems to have less abundantly the rich alluvial super- 

 ficial soil of Beeohwoods, but the ravine is deep, and 

 cool, BOlait, »nd largely densely shaded. D. itexima 

 seems to be preeminently the species of dense shade, and 

 perhaps also of moist, rich soilj the statement of Gray*s 

 UBtma.1 expresses well the ideal conditions. 



23* Dentaria diphylla Michx. 

 Scientific name: 



