178 DoweL.: THE VIOLETS OF STATEN ISLAND 
toward Ocean Terrace, May 13, 1904 (2839), and June 15, 1907 
(4777). 
50. V. PALMATA x SAGITTATA Brainerd, Rhodora 8: 54. 
27 Mr 1906 
Middletown Forest, June 4, 1905 (3797); Bradley Avenue 
woods, May 21, 1907 (4706), transplanted and specimens collected 
Sept. 29, 1907 (5242); Bloodroot Valley woods, Aug. 13, 1907 
(5083) ; Egbertville, Oct. 26, 1907 (5292), and June 14, 1908 
(5327). 
51. V. PAPILIONACEA x SAGITTATA Brainerd, Rhodora 8: 
54. 27 Mr 1906 
Palmer Tract, Port Richmond, May 18, 1907 (4687), trans- 
planted and specimens taken June 20, 1909 (5735); Emerson 
Hill, May 18, 1907 (4687). 
52. Viola papilionacea x sororia Brainerd, in herb., hyb. nov. 
This differs from V. sororia in having longer petioles, thinner 
leaves, and less pubescence, while it differs from V. papilionacea 
in being decidedly more or less pubescent. 
Here are placed the following: Grasmere, May 29, 1907 
(4722); transplanted and specimens taken Sept. 29, 1907 ( 5247); 
Emerson Hill, May 18, 1907 (4685, 4686); Egbertville, May 31, 
. 1909 (5682). 
This list does not include all the violet hybrids growing on 
Staten Island, for I have in cultivation some suspected hybrids, the 
exact identity of which is not definitely established ; but the above 
list of thirty hybrids is perhaps longer than would be expected. 
It is not surprising, however, to find so many hybrids, when we 
consider the fact that the trees are being cut down in the wood- 
lands and the natural surroundings of the plants continually dis- 
turbed. It seems that under the changed conditions they hybrid- 
ize more freely. In this connection it is interesting to note that 
while it is difficult to find typical V. hirsutula, several of its hybrids 
have been found growing in its immediate vicinity. 
The large number of species found on so restricted an area is 
partly accounted for by the fact that the terminal moraine crosses 
