TkKKS of TIIK XoKlllKkN UniIKIi S'IATKs 71 



_^^. Crataegus roanensis A >he. Roan Mountain llaw- 

 thorn. A shrill) or small tree with ascendmg branches and 

 numerous curved thorns. Leaves ovate or ohlon"j;-ovate, 

 serrate with acute straight lobes. Fruit ellipsoid, ovoid, or 

 pyritorm, crimson. Quebec to Was., N. C, and Temi. 



•_'!•. Crataegus macrosperma Ashe, ^^1rial)le flaw 

 thorn. A shrub or small tree with ascending branches and 

 numerous thorns. Leaves elliptic-ovate to broadl}' ovate, 

 doubly serrate and somewhat lobed. Fruit ellipsoid or pyri- 

 form. scarlet to crimson, often glaucous. N. S. and Maine to 

 Minn.. N. C, and Tenn. 



•■>(i. Crataegus grayana Eggl. Gray's Ilawihorn. A 

 large shrub or small tree with ascending branches. Leaves 

 ovate, doubly serrate with 4-6 pairs of acuminate lobes. Fruit 

 subglobose to short ellipsoid, angular, dark cherry-red. N. 

 Fng. to Ont. and N. Y. 



.'^1. Crataegus alnorum Sarg. Edson's PTawthorn. A 

 broad shrub or small tree with ascending branches. Leaves 

 ovate, serrate or doubly serrate with acute lobes. Fruit sub- 

 globose, slightly angular, dark cherry-red. N. Eng. to Mich, 

 and Pa. 



•'52. Crataegus populnea Ashe. Gruber's Hawthorn. 

 A shruli or small tree with a flattened round crown. Leaves 

 broadly ovate to elliptic-ovate, slightly villous, serrate or 

 doubly serrate, sometimes lobed. Fruit glabrous to short- 

 ellipsoid, scarlet. Low ground. Ont. to Pa. and Del. 



■'■!. Crataegus jesupi Sarg. Jesup's Hawthorn. A 

 large slirub or small tree with ascending branches. Leaves 

 elliptic-ovate, serrate or doubly serrate with 4 or 5 pairs of 

 acute lobes. Fruit short-ellipsoid to pyriform, slightly angled, 

 dark red. Vt. to Wis. south to Pa. 



■U. Crataegus rugosa Ashe. Rugose' Hawthc^rn. .\ 

 shruh or small tree with ascending branches. Leaves broadly 

 ovate, serrate or doubly serrate with 4-(t pairs of broad 

 acuminate lobes, glabrous. Fruit depressed-globose, bright red. 

 Conn, to Pa.. Tnd., and N. C. 



;{5. Crataegus filipes Ashe. ISeckwilh'"^ llawthnrn. .\ 

 shrub or small tree with ascending branches and numerous 

 thorns. Leaves ovate, serrate or twice serrate and lobed. 

 glabrous. Fruit globose or compressed-globose, cherry-red. 

 Western N. Eng. to Mich, south to Pa. 



