61 



in both cases. 2-leayed and 3-leayed stems may occur 

 on the same rhizome; at Beechwoods, however, it was not- 

 iceable that one patch, represented toy D. 5, had leaves 

 usually 3, while one or more of the other patches, as 

 that of D. 3, had usually 3. Forms perhaps exclusively 

 2-leaved, the otherwise typical, were found at Shurger's 

 Glen, fwo of the leaves are commonly about opposite 

 (but see below). The purplish color of the flowers is 

 also variable, and may be extremely slight. 



The remaining group of aberrant forms comes from 

 Shurger's Glen, and these will be considered first. 

 This deep, moist ravine, when visited by the writer 

 (May 18, 1912) was a very flower* -garden of Dentaria . 

 Typical forms of the 3 species were frequent, but the 

 great bulk of the plants - numerous patches, often very 

 thick - may be described as strictly 2-leaved D. maxima , 

 with leaf -form in various degrees resembling laciniata 

 (one specimen really belonging to this group has been 

 described under laciniata ). These forms seem to corre- 

 spond largely with D. incisifolia Eames, but the leaf- 

 lets are broader j on the other hand, they differ from 

 D. anomala Eames* decidedly in that the rhizomes are 

 decidedly shallow . "She specimens may be characterized 

 as follows, being groupt according to the rhizome-char- 



