Proceedino-s of the Ohio State Academy of Science 139 



20. Shrub or low tree, leaves obovate or oval; seed edible. Q. prinoides. 



20. Tall trees. 21. 



21 . Leaves mostly oblong to lanceolate ; cup deep ; bark close ; seed 



edible. Q. acuminata. 

 21 . Leaves obovate ; cup shallow ; bark more or less flaky. Q. alex- 

 anderi 



1. Quercus rubra L. Red Oak. A large tree with dark 

 gray bark, somewhat roughened. Leaves oval or somewhat obo- 

 vate, 4-8 in. long, dull green above, paler beneath, lobes triangu- 

 lar-lanceolate, tapering from a broad base to an acuminate apex; 

 cup saucer-shaped, its base Hat or slightly convex ^-i in. broad; 

 acorn ovoid, 2-4 times as long as the cup. Autumn leaves pur- 

 plish red. Wood very coarse-grained, reddish in color, porous, 

 and not very durable ; used in carpentry, cooperage, and for 

 clapboards. The most rapid grower of all the oaks. An im- 

 portant tree for tan-bark. S])routs readily from stumps. N. S. 

 to Ont., Minn., Fla.. Kan., Tex., and Ohio. 



2. Quercus palustris DuRoi. Pin Oak. A medium- 

 sized tree with brown bark, rough when old, the lower branches 

 deflexed. Leaves broadly oblong or obovate, deeply pinnatifid, 

 brighter green and shining above, duller beneath, 2^-5 in. long, 

 the lobes oblong, lanceolate or triangular-lanceolate, divergent ; 

 cup saucer-shaped, \-\ in. broad, base flat; acorn subglobose or 

 ovoid, 2-T, times as long as the cup. Wood coarse-grained, reddish, 

 and not durable. In moist ground. Mass. to Ohio and Wis., 

 Del. and Ark. 



3. Quercus schneckii IJritt. Schneck's Red Oak. A 

 medium-sized tree with reddish-brown bark with broad ridges 

 broken into plates. Leaves mostly obovate, bright green and 

 shining above, paler beneath, 2-6 in. long, truncate or broadly 

 wedge-shaped at the base, deeply pinnatifid ; lobes oblong or tri- 

 angular; c\.\\) saucer-sha])ed, \ inch broad more or less, acorn 

 ovoid, 2-7, times as high as the cup. Ind. to Iowa, Mo., Fla.. and 

 Tex. 



4. Quercus coccinea Wang. Scarlet Oak. A tree with 

 pale reddi.sh or gray inner l)ark. Leaves dec])ly pinnatifid, glab- 

 rous, bright green above, ])aler beneath, 4-8 in. long; cup hem- 



