Genus 6. 



APPLE FAMILY. 



311 



42. Crataegus macrosperma Ashe. Variable Thorn. Fig. 2'},']6. 



C. macrosperma Ashe, Journ. E. Mitch. Soc. 16: 73. 1900. 

 } Mesfihts cordata Mill. Diet. Ed. 8, n. 4. 1768: Fig. PI. 119. 

 pi. J/p. 1760. Not Crataegus cordata Ait. 



A shrub or small tree, sometimes 25° high, with as- 

 'cending branches and numerous curved spines i'-2i' 

 long. Leaves elliptic-ovate to broadly ovate, acute at 

 the apex, rounded, truncate or rarely cordate at the 

 base, serrate or doubly serrate, i'-2f' long, ¥-2%' wide, 

 membranous, slightly villous, becoming glabrate, dark 

 yellow-green above ; petioles slender, I'-i' long ; corymbs 

 glabrous or slightly villous; flowers 7"-io" broad; sta- 

 mens 5-20, usually S-io; styles and nutlets usually 3 or 

 4; fruit ellipsoid or pyriform, scarlet to crimson, often 

 glaucous, s"-9" thick, its flesh soft at maturity; calyx- 

 lobes erect or spreading. 



Noya Scotia and Maine to southeastern Minnesota, North 

 Carolina and Tennessee. May ; fruit ripe August-Septem- 

 ber. More than fifty different names have been given to 

 what is essentially this species. Figured in our first edition as C. coccinea L. 



43. Crataegus Grayana Eggl. Asa Gray's 

 Thorn. Fig. 2377. 



Crataegus Grayana Eggl. Rhodora 10; 80. May 1908. 



A large shrub, sometimes 20° high, with ascending 

 branches, the thorns ¥-2V long. Leaves ovate, i'-3i' 

 long, l'-3' wide, acuminate at the apex, broadly cuneate 

 to truncate at the base, slightly pubescent above, becom- 

 ing glabrate, serrate or doubly serrate with 4-6 pairs of 

 acuminate lobes, their tips recurved ; corymbs slightly 

 villous; flowers y"-%" broad; calyx-tube villous below, 

 the lobes slightly villous within, glandular-margined : 

 stamens about 20; styles and nutlets usually 4 or 5 ; 

 fruit subglobose to short-ellipsoid, angular, dark cherry- 

 red, 6"-8" thick; calyx-lobes reflexed. 



Montmorency Falls west to Ottawa, Ontario, western 

 New England and northeastern New York. May ; fruit 

 ripe August-September. 



44. Crataegus alnorum Sargent. Edson's Thorn. Fig. 2378. 



Crataegus alnorum Sarg. Rhodora 5: 153. 1903. 



Crataegus Edsoni Sarg, Rhodora 7: 205. 1905. 



A broad shrub, sometimes 15° high, with ascending 

 branches, the spines I'-ii' long. Leaves ovate, 1V-2I' 

 long, i'-2i' wide, acute at the apex, broadly cuneate or 

 truncate at the base, serrate or doubly serrate with 

 acute lobes, dull dark yellow-green above, paler be- 

 neath ; corymbs glabrous, many-flowered ; flowers 7"- 

 10" broad; stamens about 20; styles and nutlets 3-5; 

 fruit subglobose, slightly angular, dark cherry-red, 6" 

 or 7" thick; calyx-lobes erect or spreading; flesh suc- 

 culent. 



New England to southern Michigan, south to Pennsylva- 

 nia. May ; fruit ripe September. 



