GERMINATION OF TREES AND SHRUBS 309 



Stem between the cotyledons and the first leaf with long scat- 

 .tered hairs, stipules small, lanceolate. First leaf wedge-shaped, 

 petiolate, petiole pubescent, bright green; lower surface with a 

 few scattered hairs. Margin with long scattered hairs. Upper 

 surface of the leaf, glossiy, smooth, with a few scattered scales. 

 Leaves alternate. Trichom.es simple, slender, of variable length. 

 Occasionally of more than one cell. Base enlarged, wall thin, 

 smooth. The teeth of the leaf bear glandular hairs resting, 

 upon a row of colorless epidermal hairs ; beneath these a row of 

 polygonal cells of about the same size. The gland is constricted 

 at the base. 



FAGACEAE. 



Quercus coccinea. Muench. Scarlet Oak. The acorns were 

 gathered at Clemson College. South Carolina, early in Deeem- 



Fig. 66.- — Germination of tlie scarlet oak (Quercus coccinea). Scales show 

 below the coarsely dentate margins with bristles. Photographed by Photo. 

 Section, F. E. Colbum. 



ber, 1917, and were planted in the greenhouse in black soil on 

 December 7. The first indieation of germination was on ]March 

 1, 1918. The second acorn germinated Marcn 14, and a third 

 appeared jMarcii 18. Percentage, 75. Germination hypoggeous. 

 The young stem is pubescent, bearing small scales : the bud is 

 somewilrat more pubescent. The first two leaves are small, alter- 

 nate, entire; the succeedinjg leaves larger, penninerved, pubes- 



