GERMINATION AND JUVENILE FORMS OF SOME OAKS 373 
leaves dropped during the month of January and buds were 
formed. April tenth a new set of leaves appeared, the earlier 
ones were pinkish in color, drooping and covered with hair. One 
of the interesting features of the germinating white oak was that 
in many cases multiple stems come from between the short stalks 
of the cotyledons. It is well known that in white oak the stem is 
at first woolly, later becoming smooth. The white oak seems to 
have a higher percentage of germination than the red oak. A part 
of the higher germination for last season ’s crop was no doubt due 
to the less frequent attacks of insects. The total germination of 
the white oak at the close of the period was 73.6 per cent. On May 
tenth these seedlings ranged in height from three to four and 
one-half inches. 
Fig - . 61.— To the left young- white oaks ( Quercus alba ) in greenhouse 
May, 1917. The central plant just unfolding. The ones to right and left ot 
this, a later stage with drooping leaves, the one on the left fully expanded. 
The one to the extreme right of figure is ( Q . imbricaria) . Photographed 
May 1, by Colburn. 
Chestnut Oak ( Quercus acuminata) (Michx.) ITauba. The 
germination of the chestnut oak is hypogaeous and the acorns 
germinate soon after falling from the tree. Acorns were gather- 
ed on September 25 and planted on the 27th in sandy humus in 
the greenhouse and covered with sphagnum; other acorns were 
placed in damp sphagnum moss. On October 8 many of these 
were split at the apical end. On October 25 the hypocotyl was 
more than five times as long as the acorn. The plumule made 
its way out near the upper end of the hypocotyl which at this 
