420 



TREES OF NORTH AMERICA 



in broad compound glabrous 8-12-flovvered corymbs, with linear or oblong glandular 

 bracts and bractlets; calyx narrowly obconic, glabrous, the lobes lanceolate, gland- 

 ular-serrate, deeply tinged with purple; stamens 20; anthers pale rose color; styles 

 4 or 5. Fruit ripening early in September and soon falling, on slender pedicels, in 

 drooping few-fruited clusters, subglobose to broad-obovate, dark red to reddish 

 purple, lustrous, ^' f' long, -I'-f wide; calyx only slightly enlarged, the lobes re- 

 flexed, glandular-serrate, and red on the upper side toward the base ; flesh thick, 

 yellow, sweet, juicy, and slightly acid; nutlets 4 or 5, full and rounded at the apex, 

 narrowed and acute at the base, and prominently but irregularly ridged on the 

 back, with a high sometimes grooved ridge, ^'-yV long. 



A tree, 20-25 high, with a trunk 4'-8' in diameter and 6-9 long, covered with 

 dark gray or gray-brown flaked bark, spreading branches forming an oblong or 

 rounded open head, and slender glabrous branchlets bright red-brown and very lus- 

 trous during their first summer, becoming light gray-brown the following year, and 

 armed with stout or slender nearly straight spines f -1^' long. 



Distribution. Rich clay or gravelly soil in pastures and on the borders of woods; 

 northeastern Illinois, at Lake Forest, Glendon, and New Lenox {E. J. Hill). 



54. Crataegus basilica, Beadl. 



Leaves ovate, acute or acuminate, broadly cuneate or rounded at the entire or 

 crenate base, sharply and often doubly serrate above, with straight slender glandular 

 teeth, and divided into numerous short acute lateral lobes, more than half grown 

 when the flowers open early in May and then roughened above by short pale hairs 



F'i^Sd9 



and glabrous below, and at maturity thin but firm in texture, bright green and sca- 

 brate above, paler below, 2^'-3' long, 1^-2' wide, with slender yellow midribs and 

 thin veins arching to the points of the lobes, turning yellow and brown in the 

 autumn; their petioles slender, slightly winged at the apex, I'-l^' long. Flowers 

 ^'-|' in diameter, on elongated slender pedicels, in 6-15-flowered glabrous com- 

 pact corymbs; calyx-tube broadly obconic, glabrous, the lobes slender, acuminate, 

 glabrous, entire or occasionally serrate; stamens 15-20; anthers purple; styles 3-5. 

 Fruit ripening and falling early in September, on slender pedicels, in few-fruited 



