130 Proceeding's of the Ohio State Academy of Science 



1. Juglans nigra L. Black Walnvit. A large tree with 

 rorgh brownish black bark and a long tap root. Wood heavy, 

 hard, strong, of coarse texture ; heart-wood dark brown, of great 

 value ; used for cabinet-work, interior finish, gun-stocks, turn- 

 ery, and as veneer. Common on flood plains of streams. Mass. 

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



2. Juglans cinerea L. Butternut. A large tree with 

 gray bark the outer surface of the ridges smooth. Heart-wood 

 lighter colored and softer than in J. nigra ; used for ornamental 

 cabinet-work, mterior finish, and cooperage. In rich or rocky 

 woods. N. B. to N. Dak., Xeb., Del., Ga., Ark., and Ohio. 



*. Juglans. rcgia L. English Walnut. A round-headed 

 tree with the leaflets almost entire and nearly glabrous. Husk 

 of the nut friable. Cultivated for the sweet nuts ; from Asia. 



15. Hicoria Raf. Hickory. 



Trees with odd-pinnate leaves and serrate leaflets ; monoe- 

 cious. Axillary buds usually superposed; pith solid, 5-angled. 

 Staminate flowers in aments. Fruit a nut in a husk. 



1. Terminal bud-scales valvate. 4-6; leaflets 7-15, lanceolate or oblong- 

 lanceolate, more or less falcate. 2. 



1 . Terminal bud-scales imbricate, more than 6 ; leaflets .3-9, not falcate, 



the uppermost larger and generally obovate. 4. 



2. Nut elongated, almost terete, seed sweet; leaflets 11-15, inequi- 



lateral, acuminate. H. pecan. 



2. Nut somewhat compressed or angled, usually as broad as long: seed 



intensely bitter ; lateral leaflets falcate. 3. 



3. Leaflets 7-9; nut smooth; husk thin, splitting to below the middle. 



H. minima. 



3. Leaflets 9-13; nut angled, husk thin, splitting to the base. H. 



a qua tic a. 



4. Terminal bud large, \-\ in. long ; husk splitting freely to the base, 



nut angled, seed sweet ; middle lobe of the staminate calyx nar- 

 row, often at least twice as long as the lateral ones. 5. 



4. Terminal bud small, \-l- in. long; husk thin, not splitting freely 



to the base, nut slightly or not angled ; lobes of the staminate 

 calyx mostly nearly equal. 8. 



5. Bark shaggy, separating in long plates; husk very thick, splitting 



to the base ; outer bud-scales persisting through the winter. 6. 



