414 TREES OF NORTH AMERICA 



Stamens 10; anthers bright reddish purple; fruit crimson or purplish; leaves 

 smooth ; spines '- ' long. 49. C. paucispina (A). 



Fruit short-oblong, dark crimson ; leaves oval or ovate, dark green and scabrate above ; 

 stamens usually 5 ; anthers dark red-purple. 50. C. pentandra (A). 



Fruit subglobose, often broader than high, red or greenish yellow, with a rosy cheek ; 

 leaves ovate, dark yellow-green, smooth or scabrate above ; stamens 10 ; anthers 

 purple. 51. C. silvicola (C). 



Stamens usually 20. 



Leaves broadly ovate to oval, dark dull green and smooth above ; fruit short-oblong to 

 obovate, crimson, anthers dark purple. 52. C. lucorum (A). 



Leaves ovate, yellowish to bluish green and smooth above ; fruit subglobose to broad- 

 obovate, dark red to reddish purple ; anthers pale rose color. 53. C. depilis (A). 



Leaves ovate, bright green and scabrate above ; fruit subglobose, scarlet, with a glaucous 

 bloom ; anthers purple. 54. C. basilica (A). 



Leaves rhomboidal to broadly ovate or rarely obovate, light yellow green ; fruit short- 

 oblong, bright cherry-red ; anthers rose color. 55. C. lac era (C). 



*Stamens 5-10. 



48. Crataegus apiomorpha, Sarg. 



Leaves oblong-ovate, acuminate, rounded or rarely cuneate at the entire often 

 unsymmetrical base, finely doubly serrate above, with slender glandular teeth, and 

 slightly divided above the middle into 4 or 5 pairs of triangular acute lobes, about 

 half grown when the flowers open early in May and then membranaceous, light yel- 

 low-green and tinged with red or bronze color, and covered above with short white 

 hairs and pale and glabrous below, and at maturity thick and firm in texture, dark 

 blue-green and smooth and lustrous or sometimes dull and scabrate on the upper 

 surface, pale blue-green on the lower surface, l^'-2' or on leading shoots often 3' 

 long, l^'-l^' wide, with stout midribs and primary veins arching obliquely to the 

 points of the lobes; their petioles slender, slightly winged at the apex, of ten sparingly 



glandular, f '-!' long. Flowers '-' in diameter, on short villose or glabrous pedi- 

 cels, in compact many-flowered usually hairy compound corymbs; bracts and bract- 

 lets linear to oblong-obovate, finely glandular-serrate, with stipitate dark red or 

 purple glands, turning red before falling, mostly persistent until after the flowers 



