1894.] A Study of Quercus Leana. 175 
the Missouri Botanic Garden at St. Louis. They do not 
differ materially from authenticated specimens from the origi- 
nal tree at Cincinnati, nor from those figured by Nuttall. As 
Dr. Engelmann did not specifically separate Q. tinctoria from 
Q. coccinea, there is no way to determine which of the two 
he regarded as most effective on the hybrid. He says of the 
hybrid: ‘The relationship to cmbricaria is unquestionable, 
and among the lobed-leaved black oaks we must look to one 
of i forms of coccinea for the other parent, as the acorns, 
oly the cup and scales, indicate.” Of one growing 
os aa ehh Ill., twenty miles from St. Louis, and of 
. cane was at’ first thought to be one of the parents, 
ae * ae of the acorn is to me decisive. It is tur- 
. ae hie with rather large canescent scales, squarrose 
“ veld “08 ~ different from either rubra or tmbricaria, 
Meer “ciel ose oe pategee The globose acorn, seven 
“so Einaoea one-third covered by the cup, shows twenty- 
talks "5 y-nve black stripes, so common in many black- 
ven ; 
ble oe undergrowth of shrubs. But it is proba- 
ae ot Or some of them, considering their 
cornice coors There is no apparent defect in 
as plump and are produced as abundantl 
ik ese of other oaks in the vicisity. Dr. Engelmann ee 
Femarks vada eary. of seedlings of hybrid oaks, and 
dantly fertij : All of the supposed hybrids are abun- 
ha *, and those of their acorns which have been tested 
os eae in fact, as far as ’ know, no difference 
Shae express it. For how many genera- 
"Ne OF the oth ntinue, and whether intime forms approaching 
? the Same oes Parent may not appear, remains to be seen. 
their fertility ‘hes it is a remarkable fact, that notwithstanding 
teat ‘ ®y do not seem to propagate in their natural 
— Mality in the ie Perhaps, ascribe this to a lesser degree of 
AC Pee lybrid pr ogeny which causes them to be crowded 
Works, 406, 
