436 TREES OF NORTH AMERICA 



pubescent along the midrib on the upper surface, rufous-pubescent especially on the midrib 

 and veins on the lower surface, 1%'-%' long, and t'-lf' wide, rarely not more than 1' long 

 and I' wide; petioles slender, villose-pubescent with rufous hairs, occasionally glandular, 

 j'-|' in length; leaves at the ends of vigorous shoots oblong-obovate, rounded and short- 

 pointed to elliptic and acuminate, laterally lobed, or deeply 3-lobed at apex, often 2|' 

 long and 1^' wide. Flowers appearing from the 10th to the end of March, f '-!' in diam- 

 eter, in mostly 3-5-flowered clusters, on villose-pubescent pedicels about -$' in length; 

 calyx-tube broadly obconic, glabrous or villose-pubescent sometimes in the same cluster, 

 the lobes gradually narrowed from a broad base, acuminate, entire or slightly glandular- 

 serrate nearly to apex, glabrous or slightly pubescent on the outer surface; stamens 20; 

 anthers dark rose color; styles 3-5, surrounded at base by a ring of white tomentum. 

 Fruit ripening at the end of May, often solitary on glabrous erect pedicels \'-\' long, sub- 

 globose, scarlet, lustrous, about \' in diameter, the calyx persistent with erect lobes; 

 nutlets only slightly grooved on the back, about I' long. 



A tree, sometimes 30 high, with a tall trunk 8'-10' in diameter, covered with rough 

 deeply furrowed dark bark, paler and less deeply furrowed on smaller and younger stems, 

 stout ascending and spreading branches forming a broad round-topped head, and slender 

 slightly zigzag branchlets covered when they first appear with pale tomentum, glabrous or 

 rusty tomentose until the early summer, becoming chestnut-brown, lustrous and glabrous 

 before autumn and dull gray in their second year, and unarmed or armed with slender or 

 stout straight spines ^'-1|' in length. 



Distribution. Depressions filled with water except at midsummer, sandy borders of 

 ponds and streams and low wet prairies, Cottondale and Round Lake, Jackson County, 

 and Quincy, Gadsden County, Florida; near Bainbridge, Decatur County, and Albany, 

 Dougherty County, Georgia; near Dothan, Houston County, Alabama; pond holes along 

 the Neuse River near Goldsboro, Wayne County, North Carolina. 



40. Crataegus opaca Hook. 

 Cratoegus cestivalis Torr. & Gray in part, not Mespilus cestivalis Walt. 



Leaves elliptic to oblong-cuniform, gradually narrowed and acute or bluntly pointed 

 at apex, cuneate at the often glandular base, finely crenately serrate above the middle with 



Fig. 392 



minute glandular teeth, pilose above and hoary-tomentose below when they unfold, and 

 at maturity dull dark green and glabrous or slightly hairy on the midrib on the upper sur- 

 face, pubescent on the lower surface with rusty brown hairs most abundant on the midrib 



