534 



TREES OF NORTH AMERICA 



wing-margined above, ^'-f in length; leaves at the end of vigorous shoots sometimes broad- 

 ovate or almost triangular, cuneate, truncate or cordate at the broad base, more or less 

 deeply lobed, frequently 2^' long and 2' wide, with foliaceous broadly ovate to triangular 

 acute stalked stipules sometimes 1' long. Flowers ^' in diameter, on slender pedicels, in 

 crowded glabrous many-flowered corymbs; calyx-tube narrowly obconic, glabrous, the 

 lobes short, nearly triangular, gradually narrowed to the gland-tipped apex, entire; petals 

 turning bright orange color in fading; stamens 15-20; anthers yellow; styles 3-5. Fruit 

 ripening and falling the middle of August, on erect pedicels, in few-fruited clusters, sub- 

 globose or obovoid, bright blue, covered with a glaucous bloom, %'%' in diameter; calyx 

 slightly enlarged, with spreading lobes; flesh thin; nutlets 3-5, narrowed and acute at base, 

 full and rounded at apex, rounded and slightly grooved on the back, about ' long. 



A tree, 40-50 high, with a trunk 18'-20' in diameter, covered with thick dark brown 

 deeply furrowed scaly bark, and divided usually 5-10 from the ground into stout spread- 

 ing light gray branches forming a broad compact round-topped head, and branchlets light 

 green and slightly pubescent early in the season, soon becoming glabrous and pale red- 

 brown, and ultimately ashy gray, and armed with numerous short stout generally curved or 

 sometimes straight slender spines |'-f ' long, and also often terminal on the lateral branch- 

 lets of vigorous shoots. 



Distribution. Borders of streams in rich moist soil; southwestern Arkansas (Ashtown, 

 Little River County, and Texarkana, Miller County) to the valley of the Trinity River 

 (Livingston, Polk County), eastern Texas, and to western Louisiana (Caddo, Webster, 

 Ouachita, Natchitoches, St. Landry and Jefferson Davis Parishes) ; in eastern Louisiana 

 (Glen Gordon, Covington, St. Tammany Parish; common); a few miles west of Opelousas, 

 Louisiana, surrounding with dense groves low wet prairies and a conspicuous and beautiful 

 .feature of arborescent vegetation. 



139. Cratsegus saligna Greene. 



Leaves narrow-rhombic to oval, gradually narrowed at the ends, acute or acuminate and 

 apiculate at apex, entire toward the base, finely serrate above with incurved teeth tipped 

 with minute bright red glands, nearly fully grown when the flowers open toward the middle 



Fig. 491 



of June, and then light yellow-green, covered above with short pale hairs and pale and gla- 

 brous below, and at maturity thick and firm, dark green, glabrous and lustrous above, pale 

 below l|'-2' long, and '-!' wide, with a stout midrib rose color on the upper side, dark ob- 

 scure forked veins, and reticulate veinlets; turning late in the autumn to brilliant shades of 



