6i8 



FAGACEAE. 



Vol. I. 



3. Quercus Schneckii Britton. Schneck's Oak. 

 Fig. 15 16. 



Quercus Schneckii Britton, Manual 333. 1901. 



A forest tree, attaining a maximum height of about 

 2oo° and a trunk diameter of 8°, usually smaller. Bark 

 reddish-brown, with broad ridges broken into plates; 

 leaves mostly obovate in outline, bright green and shin- 

 ing above, paler and with tufts of wool in the axils 

 beneath, 2'-6' long, truncate or broadly wedge-shaped 

 at the base, deeply pinnatifid into 5-9 oblong or tri- 

 angular lobes, which are entire or coarsely few toothed, 

 the lobes and teeth bristle-tipped; styles short; fruit 

 maturing in the autumn of the second season; cup 

 deeply saucer-shaped, 6"-8" broad, its scales obtusish 

 or acute, appressed; acorn ovoid, i'-i' long, 2-3 times 

 as high as the cup. 



North Carolina to Indiana, Iowa, Missouri, Florida and 

 Texas. Wood hard, light red-brown ; weight per cubic 

 foot 57 lbs. April-May. Acorns ripe Sept.-Oct. Has been 

 confused with Quercus texana Buckley. 



4. Quercus borealis Michx. f. 

 Gray Oak. Fig. 15 17. 



Q, borealis Michx. f. N. A. Sylv. 1 : 98. pi. 

 26. 181 7. 



A forest- tree, reaching at least 90 in 

 height, with a trunk diameter up to 3 , 

 the bark rough in plates and ridges. 

 Leaves ovate to obovate in outline, 7- 

 13-lobed, 4-7' long, deep green and 

 dull above, paler green and with tufts of 

 hairs in the axils of the leaves beneath, 

 the acute lobes bristle-tipped, the slender 

 leaf-stalk 2' long or less; pistillate flow- 

 ers with long spreading styles ; fruit ma- 

 turing in the autumn of the second 

 season; cup depressed-hemispheric, i'-i' 

 wide, embracing one-third to one-half 

 of the acorn, its scales obtuse. 



Quebec and Ontario to New York and 

 Pennsylvania. 



5. Quercus ellipsoidalis E. J. Hill. Hill's 

 Oak. Fig. 15 18. 



Quercus ellipsoidalis E. J. Hill, Bot. Gaz. 27: 204. 1899. 



A tree, becoming about 65° high, with a trunk 

 diameter up to nearly 4°, the rather thin, shallowly 

 fissured bark grayish-brown without, yellow within, 

 the twigs appressed-pubescent when young. Leaves 

 broadly oval or obovate in outline, deeply pinnatifid 

 with rounded sinuses, bright green and shining above, 

 paler, and with tufts of hairs in the axils of the 

 veins beneath, 2i'-6' long, the lobes and teeth bristle- 

 tipped; fruit ripening in the autumn of the second 

 season; cup turbinate, s"-j" wide, embracing one- 

 third to one-half of the ellipsoid to globose-ovoid 

 acorn, its scales ovate, blunt. 



In clayey soils, Illinois to Minnesota. May. Acorns 

 ripe Oct. Also called yellow oak and black oak. Per- 

 haps a hybrid between Q. veliitina and Q. coccinea. 



