GERMINATION OF WOODY PLANTS 
275 
Fig. 37. Carya illinoiensis. Hickory. Young seedlings, two stages. Trichomes, 
and glandular hair, from stem. Drawn by C. M. King. 
The stem reddish ; bears numerous bracts, glandular pubescence. 
First leaf is simple; second is also simple; the third leaf shows 
beginning of separate leaflet at base; the fourth leaf bears the 
small leaflet; all leaves with sharp serrations and with fine scat- 
tered hairs along the veins on the under side. Upper surface of 
the leaves slightly pubescent. 
Upon the plant, quite generally occur glandular hairs ; these are 
short with the terminal cell enlarged, dark in color. The simple 
trichomes also numerous, are slender, pointed and colorless. 
Fagaceae 
Pagus grandifolia Ehrh. Beech. See figures 38, 39, 40. 
Placed in soil, out of doors for stratifying October 25, 1920; 
transferred to greenhouse March 25, 1921. Many of the seeds 
were germinating when examined and all grew immediately upon 
being bedded in the greenhouse. 
The three valves of the shell split apart, showing how the coty- 
ledons are keeled and folded together in the seed. The ridge 
of the cotyledon folds into a corresponding groove of the other, 
the plumule lying between. The outer or lower side of the coty- 
ledon is whitish becoming decidedly pink ; the inner or upper one 
