GENUS 6. 



APPLE FAMILY. 



42. Crataegus macrosperma Ashe. Variable Thorn. Fig. 2376. 



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

 ? Mespilus cor data Mill. Diet. Ed. 8, n. 4. 1768: Fig. PL 119. 

 pi. 179. 1760. Not Crataegus cordata Ait. 



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

 cending branches and numerous curved spines l'-2f 

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

 the apex, rounded, truncate or rarely cordate at the 

 base, serrate or doubly serrate, f'-2|' 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 5-10; styles and nutlets usually 3 or 

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

 glaucous, 5 "-9" thick, its flesh soft at maturity; calyx- 

 lobes erect or spreading. 



Nova 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 \'-2\' long. Leaves ovate, i'-3J' 

 long, f'-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 7"-8" 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, ii'-2^' 

 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. 



