126 The Botanical Gazette. [April, 
range extending from New York to North Carolina (and perhaps be- 
yond this), one might suppose that this fact alone would be deemed 
sufficient to exclude the theory of hybridity in this case. 
Within the last thirty years I have had the opportunity of observing 
it at different localities in Delaware and New Jersey and am now led 
to the conclusion that it is a variety of Quercus imbricaria Michx, of 
which we have here two forms, one with entire leaves, the other with 
oak with Quercus imbricaria. ; 
The evidence’ of this affinity may be seen when we compare (whats 
here taken to be) the entire-leaved form with the type and the lobe- 
leaved form of its variety. If further observation should confirm the 
conclusions here reached, and I believe that it will, it will then be 
proper to designate this oak by the name: 
Quercus imbricaria Michx., var. heterophylla ( Michx.). 
a entire-leaved form ’ 
6. ——— lobe-leaved form—Quercus heterophylla est 
In 1882 I found an oak in Salem Co., New Jersey, with entire lear 
Specimens from this tree were sent to Dr. Britton, who referred it 
his Quercus Rudkini (Catalogue of New Jersey plants, p- 223). We 
first discovered I noticed some features characteristic of the 
oak to which I was inclined to refer it at the time. Later obse 
have now convinced me that it is the entire-leaved form of 
tioned above. -¢ that 
After some hesitation these views are presented in the belief pe 
further investigation will confirm the conclusion here reached a" 
decide a long pending question, the status of the Bartram oak—* 
Commons, Wilmington, Del. 
2 
tions 
it me 
own fact, a 
ed, that . 
wounds caused by the spines of the involucre of Cenchrus tribulo! in 
this regard led me to believe that there were some ae theit 3 
(4 : 
