GERMINATION AND JUVENILE FORMS OF SOME OAKS 38: 
coming smooth, margin of leaf undulate with a few hairs. On 
May 10 the height of this seedling was from six and one-half 
to eight and one-half inches. 
Fig. 72. — The bur oak (Qiiercus macrccarpa ) ; 1, germinating acorn in 
cup ; 2, tri chorhes of stem ; 3, trichomes of leaf. Drawn by C. M. King. 
Bur Oak ( Quercus macrocarpa Michx.) . Acorns planted on 
October 2 in sandy humus covered with sphagnum moss were 
kept moist. Germination did not occur until April. However all 
