GERMINATION AND JUVENILE FORMS OF SOME OAKS 381 
or slightly curved, variable in length, cell- wall white, thick, 
contents brown, The first leaves consist of scales, the upper 
larger, wide at the middle, with rounded lobes, pubescence scat- 
tered and abundant below, smooth above, trichomes on lower 
surface of the leaf. On May tenth seedlings of Quercus stellata 
were two inches in height. 
Swamp White Oak ( Quercus plcitanoides Lam.) Sudw. The 
acorns were gathered near Centerville, Iowa, on October 16. 
Fig. 69. — Upper left hand figure post oak ( Quercus stellata). Upper right 
hand figure Q. aquatica, scalelike leaves on stem below, stipules and fully 
formed leaves. Middle figure Q. velutina with scales and stipules, younger 
and older leaves. Photographed May 1, by Colburn. 
They were planted on sandy humus covered with sphagnum and 
kept moist. These acorns did not germinate until February. 
Lenticels are conspicuous on young branches, trichomes of stem 
long pointed, straight or slightly curved, walls thick, contents 
brown. The first leaves are somewhat pubescent. The leaves 
become successively larger, woolly 'pubescent, the upper leaves 
