Crataegus Rosaceae 535 



II. PUNCTATAE Loud. 



Foliage and inflorescence villous or pubescent; leaves dull above. 



Leaves of flowering branches usually 3.5-5 cm long, 2-3 cm wide, on sterile shoots 

 acute or acuminate and incised toward the apex; fruit 12-18 mm in diameter. . . . 



5. C. punctata, p. 539. 



Leaves of flowering branches usually 2-3 cm long, 1.5-2 cm wide, on sterile shoots 

 often obtuse or short-pointed and with shallow or obscure lobes; fruit 8-14 mm 



in diameter 6. C. collina, p. 539. 



Foliage and inflorescence glabrous or essentially so; leaves somewhat glossy above. 

 Leaves mostly rounded or abruptly pointed at the apex, slightly villous above when 



young; fruit subglobose, bright red at maturity 7. C. grandis, p. 540. 



Leaves mostly acute or acuminate at the apex, glabrous; fruit oblong or obovoid, 

 dull red or russet at maturity 8. C. disperma, p. 541. 



III. VIRIDES Beadle 



Leaves mostly oblong or rhombic in outline, dentate or with shallow lobes, thin, 

 glabrous at maturity except for tufts of tomentum in the axils of the veins; 

 fruit subglobose, 5-8 mm in diameter; nutlets usually 5 9. C. viridis, p. 541. 



IV. ROTUNDIFOLIAE Eggl. 



Leaves variable, short-obovate or suborbicular (or in the variety lance-ovate) , usually 

 incised with small, shallow lobes; fruit subglobose, 8-14 mm in diameter; nutlets 

 2-3. 

 Leaves rounded or short-pointed at the apex, from slightly longer than wide to 



equilateral or even wider 10. C. Margaretta, p. 541. 



Leaves lance-ovate or lance-elliptic, narrowed or acuminate at the apex, one to 



one and a half times as long as wide 



10a. C. Margaretta var. angustifolia, p. 543. 



V. INTRICATAE Sarg. 



Leaves and inflorescence glabrous or essentially so; fruit glabrous. 



Leaves mostly ovate, rounded or abruptly contracted at the base, broadest below 



the middle, usually sharply lobed; fruit dull orange or bronze 



11. C. intricata, p. 543. 



Leaves mostly oblong-lanceolate or elliptic, pointed or acuminate at both ends, 

 usually broadest about the middle, undivided or with shallow, obscure lobes; 



fruit bright red at maturity 12. C. rubella, p. 543. 



Leaves and inflorescence villous; fruit pubescent 13. C. biltmoreana, p. 544. 



VI. TENUIFOLIAE Sarg. 



Leaves thin, mostly ovate, more or less lobed; flowers 12-14 mm in diameter; stamens 

 10 or fewer; fruit 7-9 mm in diameter, becoming mellow or succulent, with a small, 

 sessile calyx 14. C. macrosperma, p. 545. 



VII. PRUINOSAE Sarg. 



Stamens usually about 20; fruiting calyx large and elevated; leaves glabrous (except 

 in no. 17). 

 Leaves of flowering branches mostly ovate, rounded or abruptly contracted at the 

 broad base, distinctly longer than wide, usually blue green. 

 Leaves glabrous; fruit subglobose to slightly pyriform, remaining hard and dry, 

 green or dull crimson at maturity. 

 Leaves pointed but not conspicuously elongated at the apex; fruit usually 12-16 

 mm in diameter 15. C. pruinosa, p. 545. 



