1925] PALMER, SYNOPSIS OF NORTH AMERICAN CRATAEGI 81 



fecunda Sarg. Corymbs usually glabrous or nearly so. Fruit characters 



as given above, 

 helderbergensis Sarg. Fruit short-oblong to obovoid, crimson, dotted, 



about 8 mm. diameter, 

 montivaga Sarg. Fruit short-oblong to ellipsoidal, orange-red, 6-7 mm, 



diameter. 



palliata Sarg. Fruit subglobose, dark red, pale dotted, 10 mm. diameter. 



persimilis Sarg. Corymbs sometimes glabrous or nearly so. Fruit char- 

 acters as given above. 



tetrica Beadle. Fruit subglobose, red or yellowish-green, about 10 mm. 



diameter, 

 triumphalis Sarg. Fruit oval or short-oblong, crimson or greenish-red, 



pale dotted, 8-10 mm. diameter, 

 vallicola Sarg. Fruit short-oblong, dull crimson blotched with green, 



pale dotted, 14-16 mm. diameter. 

 Warneri Sarg. Fruit ellipsoidal or subglobose, orange-red, 6-9 mm. 



diameter. 



BB. Stamens about 20 (15-20) 



C. Corymbs at flowering time glabrous or nearly so 



D. Leaves of flowering branches mostly spatulate, obovate or lance-elliptic 

 (on vigorous shoots broader but usually longer than wide) 



Cocksii Sarg. Fruit short-oblong to slightly obovoid, crimson, 8-12 mm. 



diameter. 

 Fontanesiana Steud. Fruit short-oblong or oval, bright red, 8-10 mm. 



diameter. 



leptophylla Sarg. Fruit short-oblong to slightly obovoid, light orange- 

 red, 8-10. mm. diameter. 



limnophylla Sarg. Fruit ellipsoidal, bright red, 6-7 mm. diameter. 



phlebodia Sarg. Fruit short-oblong, dull scarlet blotched with 

 pale dotted, 8-11 mm. diameter. 



DD. Leaves of flowering branches broader, mostly elliptic, oblong or oval 

 (on vigorous shoots broadly oval to suborbicular) 



attenuata Ashe. Stamens usually 10; fruit characters as given above. 

 Bushii Sarg. Fruit short-oblong, green tinged with red, 6-8 mm. diameter, 

 cerasina Sarg. Fruit short-oblong, bright cherry-red, pale dotted, 8-10 



mm. diameter. Stamens sometimes only 10. 

 intermixta Sarg. Fruit subglobose to slightly obovoid, dark orange-red, 



10-12 mm. diameter, 

 lawrencensis Sarg. Stamens sometimes 15 or less. Fruit characters as 



given above. 

 Pennypackeri Sarg. Fhiit oblong, bright crimson, pale dotted, 8-10 mm. 



diameter. Corymbs sometimes slightly villous, 

 persimilis Sarg. Fruit oblong to subglobose, dark crimson, dark dotted, 



about 11 mm. diameter. Corymbs sometimes slightly villous, 

 robusta Sarg. Fruit short-oblong to obovoid, crimson, pale dotted, 7-8 



mm. diameter. Stamens sometimes only 10. 



green 



