96 BRAINERD: HYBRIDS OF THE PALMATA GROUP 
Witmer Stone’s Violet Distribution no. 5107, colony 3, “V. 
balmata dilatata Ell.,” Sherwood, Philadelphia, May 17, 1903, is 
plainly this hybrid. So also is H. D. House 823, Glen Echo, 
May 25, 1905, Violets of the District of Columbia. The name 
on the label, “ V. villosa X palmata asartfolia’’ would indicate that 
Mr. House considered it V. hirsutula X sororia; but my specimen 
bears one lobed leaf. 
Viloa hirsutula < palmata hyb. nov. 
Plant small, cespitose; leaves all palmatifid, the incisions 
becoming shorter toward the base; the blades somewhat pubes- 
cent beneath, finely ciliate and bearing minute white hairs along 
the veins above; capsules nearly sterile. 
One plant only was found in an open woods near Plainfield, 
N. J., September 1906, with both parents growing near. This was 
transplanted to the Middlebury garden and later multiplied by 
division, but I have failed to obtain sufficient seeds for a sowing. 
However, the marks of its double parentage are pronounced. 
Viola hirsutula X Stoneana nom. nov. 
V. Stoneana X villosa House, Rhodora 8: 121. pl. 72. Jl 1906. 
The plants seem to be rare; Mr. House got it only from the type 
station, Hyattsville, Md. I collected a specimen at Ivy Hill 
Cemetery, Philadelphia, Sept. 6, 1905; and in April 1908 Dr. 
Theo. Holm kindly sent me a live plant from Brookland, D. C. 
From the latter plant I obtained in 1909 three offspring that 
differed widely from each other in the relative number of cut and 
uncut leaves, and in that the cut leaves of the several plants were 
quite unlike each other in the number and length of the lobes. 
In two of the ten hybrids discussed in this paper, both parents 
are cut-leaved species: V. palmata X triloba and V. Stoneana X 
triloba; in the remaining eight the leaves of one parent are cut, of 
the other uncut. In all cases the leaf of the first hybrid (Fi) 
has an intermediate form. This rule regarding hybrid leaf form 
holds in all observed cases in the genus Viola. The same rule 
prevails to a large extent as regards pubescence; but here there 
are also cases of more or less complete dominance, as in V. Stone- 
ana X triloba, where it is impracticable without an experimental 
test to distinguish among pubescent offspring which is stable 
