222 



The Hickories 



leaf scars. The leaves are up to 4 dm. long, including the stout, brownish hairy 

 leaf-stalk, consisting of 9 to 19 short-stalked, lanceolate or ovate-lanceolate leaf- 

 lets, 6 to 1 2 cm. long, or the lower ovate, broadest near the rounded base, long 

 taper-pointed, and coarsely toothed on the margin, yellowish hairy when unfold- 

 ing, becoming yellowish green and smooth, or hair)' along the prominent, stout, 

 yellow midrib beneath. The staminate catkins are slender, somewhat hair}', 5 

 to 10 cm. long, the bracts ovate-lanceolate, sharp-pointed, and yellowish woolly, 



the perianth nearly orbicular, 3- to 5-lobed, 

 short-stalked, nearly smooth; stamens about 

 20, their anthers yellow, nearly sessile, with 

 slightly lobed connectives. The pistillate 

 flowers are 3 to 6 mm. long, coated with 

 brown woolly hairs; the bracts of the involu- 

 cre are irregularly toothed, rather shorter 

 than the sepals. The fruit is globose, rarely 

 oblong, about 4 cm. in diameter, its husk 

 brownish hairy; nut globose, without ridges, 

 sometimes slightly compressed, longitudinally 

 grooved, with shallow grooves, 4-celled at the 

 base, 2-celled at the apex, brown to nearly 

 black, the wall thin and containing many 

 cavities; seed large and sweet. 



The wood is hard, rather weak, coarse- 

 grained, rich dark brown, and satiny; its specific gravity is about 0.67. 



This tree is distinguished from the Texan walnut by its larger, broader, and 

 more coarsely toothed leaves, larger fruit, with a thinner walled, less grooved nut. 

 The recently described Juglans elceopyren Dodc, from the Santa Catalina 

 Mountains, Arizona, differs from this species by its longer, sharp-pointed nuts, 

 but considering the known variability in shape of the nuts of other walnuts and 

 hickories, it cannot be certainly held to be distinct, at least until more is known 

 of it. 



Fig. 181. Arizona Walnut. 



which 

 largely 

 and is 



II. THE HICKORIES 



GENUS mCORIA RAFINESQUE 



Carya Nuttall 



ICKORIES are confined to eastern North America where 14 species 



are known, and one inhabits Mexico. Many fossil species have been 



described from Europe, Greenland, and western North America. 



They have an aromatic watery sap, soHd pith, and XQxy tough wood, 



is highly valued on account of its strength, elasticity, and hghtness, being 



used for ax and other handles, the spokes of buggy and wagon wheels, 



one of the very best woods for fuel and for the curing of meat. The nuts 



