144 Proceeding's of the Ohio State Academy of Science 



22. Quercus acuminata (Mx. ) Houda. Chestnut Oak. 

 A tree with close gray bark. Leaves oblong, lanceolate, or some- 

 times obovate, coarsely toothed with acute teeth, shining above, 

 pale and gray-tomentulose beneath, 4-6 in. long; cup sessile or 

 very short-peduncled. hemispheric; acorn ovoid about twice as 

 high as the cup, sweet and edible. Self-prunes abundantly. 

 Wood strong and durable, much like White Oak. Usually in dry 

 soil, commonly on lime stone ridges. Out. to Alinn., Ga., Ala., 

 Tex., and Ohio. 



23. Quercus alexanderi Britt. Alexander's Chestnut 

 Oak. A tree with gray bark, flaky, especially when old. Leaves 

 obovate or oblong-obovate, broadest above the middle, coarsely 

 toothed; cup short-stalked or sessile, shallow; acorn ovoid, 2-3 

 times as high as the cup. Self-prunes. \'t. to Mich., and Ind. 



24. Quercus prinoides ^Villd. Scrub Chestnut Oak. A 

 shrub or small tree with grav bark. Leaves obovate, coarsely 

 toothed, bright green and shining above, gray-tomentulose be- 

 neath, narrowed at the base ; cup sessile, hemispheric, thin ; acorn 

 ovoid, 2-3 times as long as the cup; seed sweet and edible. Self- 

 prunes. In drv sanch- or rocky soil. Me. to Ohio and Minn., 

 Ala., and Tex. 



Order, Urticales. 



Uhnaceoe. Elm Family. 

 23. Ulmus L. I^lm. 

 Trees of rapid growth with 2-ranked inequilateral leaves, the 

 lateral veins straight and parallel. Flowers bisporangiate or im- 

 perfectly bisporangiate in clusters or racemes. Fruit a samara. 



1. Leaves very rough above: inner liark very mucilaginous; twigs 

 not corky-winged and not self-pruned, hut large numbers of lateral 

 buds cut off: samara not ciliate. I', fuha. 



1. Leaves smooth or sometimes rather rough al)ove : inner bark not 



mucilaginous. "2. 



2. None of the branches corky-winged; twigs smooth, self-pruned by 



basal joints and by cleavage planes in the nodes of annual growth; 

 samara faces glabrous. V. anicricaiia. 

 2. None of the branches with corky ridges; twigs glabrous or nearly 

 so, not self-pruned : samara glabrous or nearly so. deeply notched. 

 U. cain/^cstris. 



