44 ^"EW YORK STATE MUSEUM 



acute, 2.5-3.5 mm ^ on g> half as broad; petals pale yellow, 8-10 mm 

 long, obcordate or notched; filaments glabrous; capsules columnar, 

 12-15 mxn long? rather abruptly pointed at the apex and densely 

 appressed-pubescent. 



In dry sterile rocky and sandy fields. Taberg, H. D. House 

 6140, June 5, 1919 (type in the herbarium of the New York State 

 Museum). Monroe county, E. K. Killip (herb. Rochester Acad. 

 Sciences). 



Closely related to Xanthoxalis stricta, as described in 

 the ^North American Flora, but differs chiefly in its uniform dense 

 grayish indument of fine appressed hairs, which extends to all parts 

 of the plant except the petals and filaments. 



Dentaria diphylla x maxima Haberer, hyb. nov. 

 The rootstocks are slightly constricted but not distinctly articu- 

 lated; leaves three- foliate, the cauline ones two-three in number 

 and more or less remote, rarely subopposite, more sharply toothed 

 than in D. diphylla, otherwise resembling D . maxima. 



Near Utica, Haberer (Type, in herb. N. Y. State Museum). 

 Also collected near Oneida and Chittenango Falls, Madison county. 

 House. 



Dentaria laciniata x maxima Haberer, hyb. nov. 



Growing with D . laciniata and D . maxima, and pre- 

 senting all the appearance of being intermediate between the two 

 species. Deerfield, Oneida county, Haberer (Type). Chittenango 

 Falls, Madison county, House. 



These plants correspond with the description of D . i n c i s i - 

 folia Eames (Gray's Man. Ed. 7, 434. 1908). The report of 

 D. heterophylla Nutt. by Paine (Cat. PI. Oneida Co. 60. 

 1865) is probably based upon this hybrid, collected by Haberer at 

 the locality cited by Paine. Typical D. heterophylla Nutt., 

 is unknown in central New York. 



Dentaria laciniata x diphylla, hyb. nov. 



Locally common in several localities in Oneida county and other 

 central New York towns. D . laciniata blooms several days 

 to two weeks earlier than D . diphylla where the two species 

 grow together, but often the blossoming of the two species overlaps. 

 The hybrid is intermediate in leaf and root characters, and more easily 

 recognized than either of the two Dentaria hybrids above men- 

 tioned. It appears to correspond to the description of D . a n o - 

 malt Eames (Rhodora, 5: 217. 1903) although authentic speci- 

 mens of that have not been seen. The type of this hybrid may be 

 represented by a specimen collected near Oneida. H. D. House 6898, 

 Mav 22. 



