GERMINATION OF TREES AND SHRUBS 



303 



12, 1917. Germination hypoga?ons. Radicle long, woody, brown- 

 ish ; lateral roots numerous, seedling' described ^May 22, lower 

 leaves scalelike, from seventh to ninth expanded into leaves. 

 Fully fonned leaves have three leaflets, penni-nerved. Lower 

 surface slightly pubescent, hairs on midrib. ITjDper surface of 

 leaf smooth. Tenninal leaflet larger than others, generally 

 broadly oval, serrate. Lateral leaflets lanceolate. The young 

 unfolding leaves pubescent on veins ; young buds glandular ; also 

 base of petioles ; young stem glandular. 



FiS'. 50. — Missoiu-i liickoi->- nut (Cariia laciniosa) , early and later stages 

 of germination. Photographed Ijy Plioto. Section. Experiment Station, F. E. 

 Colburn. 



Carya laciniosa (Michx. f.) Loud. Kingnut or Big Shell-bark. 

 Seed collected on Chariton bottoms, September 28, 1917, by L. 

 H. Pammel and G. B. MacDonald. Wintered out of doors; 

 planted in greenhouse March 19 ; germinated May 1, 1918, 50 

 per cent. Germination hypo.gteous. Part of the stem above the 

 groimd reddish green, slightly roughened. Lower scales drop 

 easily leaving a small bud in the axil. First leaf with long peti- 

 ole, reddish, with resinous granules, leaflets folded toward me 

 inside. In the first leaf lower portions scalelike, with ciliate 

 margins, reddish. Trichomes long, slender, colorless, pointed. 



