WALNUT FAMILY. 



305 



Thick Shell-bark Hickory, C. sulea'ta, Nutt., is a nearly allied species 

 found in Pennsylvania and westward. It is distinguished by having 7-9 

 leaflets, an oval 4-ribbed fruit with intervening furrows and a yellowish, 

 thick-shelled, strongly-pointed nut. 



** Seed small, but edible ; valves of the hull only partially separating. 

 3, C. tomento'sa, Nutt. Leaflets 7-9, oblong or obovate-lauceolate, 



Fio. 195. The flowers of the Mocker Nut Hickory (Carya tomentosa) the pistillate flow- 

 ers above, the staminate ones in loose hanging aments. 196. A separate pistillate flower. 

 197. The ripe nut showing the husk (epicarp) splitting into 4 valves. 



