430 



TREES OF NORTH AMERICA 



A tree, 15-20 high, with a tall straight stem 8'-10' in diameter, covered with 

 thin dark brown furrowed bark, spreading branches forming a broad open head, and 

 branchlets hoary-tomentose at first, soon puberulous, dull reddish brown or yellow- 

 brown by midsummer, becoming ashy gray late in the autumn, and armed with few 

 straight gray spines about 1' in length. 



Distribution. Low rich woods on the bottom-lands of the Brazos River at Co- 

 lumbia and Brazoria, Texas. 



i- Anthers rose color. 



63. Crataegus corusca, Sarg. 



Leaves ovate, acute, truncate, rounded or slightly cordate at the broad base, reg- 

 ularly divided into 4 or 5 pairs of short acute lateral lobes, and doubly serrate, with 

 straight glandular teeth, when they unfold covered above with short soft pale hairs 

 and glabrous below, about one third grown when the flowers open the middle of May, 

 and at maturity thin but firm and rigid in texture, glabrous, dark yellow-green and 

 very bright and shining above, pale yellow-green below, 2'-2^' long and wide, with 



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slender pale midribs and primary veins; their petioles slender, nearly terete, villose 

 at first, soon becoming glabrous and dark red below the middle, l^'-2^' long; o" vig- 

 orous shoots frequently divided into narrow acute lateral lobes, and often 3^'-4' 

 long and wide, with lunate coarsely dentate stipules ^'-f' broad. Flowers |' in di- 

 ameter, on stout villose pedicels, in compact narrow compound many-flowered corymbs 

 covered with matted pale hairs; calyx-tube narrowly obconic, glabrous or villose 

 below, the lobes narrowed from broad bases, acute, coarsely glandular-serrate, villose 

 on the inner surface; stamens 20; anthers small, pale pink; styles 4 or 5. Fruit be- 

 ginning to ripen and fall about the middle of September and continuing to fall until 

 the end of October, on stout pedicels, in glabrous few-fruited clusters, oblong or 

 obovate, bright cherry-red, lustrous, marked by dark scattered pale dots, f -f long, 

 2 ~l' wide; calyx little enlarged, the lobes gradually narrowed, slightly glandular- 

 serrate, usually deciduous before the fruit ripens; flesh thick, yellow, dry and mealy; 

 nutlets 4 or 5, dark-colored, rounded on the back, 1' long. 



A tree, 18-20 high, with a tall trunk 8'-10' in diameter, wide-spreading branches 



