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va 
New Yorx Acricutrura, Exprriment Station. — 605 
abortive, unless the flowers are supplied with pollen from herma- 
phrodite or from staminate blossoms, each to be found on some 
other vine, as no vine ever produces flowers of different sexual 
characters.* Rarely has he found vines with pistillate flowers and 
short stamens that were capable of self-fertilization, and in such 
cases the flowers appeared semi-hermaphrodite. 
- The following observations were also made: 
1. A specimen of cstivalis transplanted to the vineyard has 
long filaments and proves to be fully self-fertile. | 
2. Vitis Doanianu, as represented by a specimen transplanted 
to the vineyard, has pollen self-irritant only, and fails to fruit when 
self-fertilized. 
3. The Delaware, classed doubtfully as hybrid of Lowrgwin- 
tana and Labrusca has long filaments and is fully self-fertile. 
4, Pollen that is self-impotent only, or self-irritant only, may 
prove fully potent on other varieties. This was the case this sea- 
_ son with Merrimac (Rog. 19), which has fertilized V. Sv/ones, and 
with EKumelan, which has fertilized Clinton. 
Grapes Unfruitful when Standing Alone. 
These experiments show that under the conditions of soil and 
climate found at this Station the following varieties may be 
expected to prove unfruitful when planted by themselves, out of — 
the reach of pollen from other varieties: 

Black Eagle. 
Brighton. 
Eumelan. 
Massasoit (Rogers No. 3). 
Wilder (Rogers No. 4). 
Rogers No. 5. 
Gaertner (Rogers No. 14). 
Merrimac (Rogers No. 19). 
Requa (Rogers No. 28). 
Aminia (Rogers No. 39). 
Essex (Rogers No. 41). 
Barry (Rogers No. 43). 
Herbert (Rogers No. 44). 
Salem (Rogers No. 53). 

* Observations on cultural varieties in the Station vineyard shows that staminate flowers 
a and perfect flowers may occur on the same vine, though this is rarely the case. 
