200 



membranaceous ; petioles slender, 2-3 cm. (%-l 14 inches) long, 

 slightly winged above; corymbs glabrous or slightly villous, many- 

 flowered; flowers appear in May, 1.5-2 cm. (i^-^inch) broad; stamens 

 5-20, usually 5-10; styles and nutlets usually 3 or 4; calyx lobes lance- 

 olate-acuminate, entire; fruit ripens in August or September, ellipsoidal 

 or pyriform, scarlet to crimson, often glaucous, 1-1.8 cm. (J-% inch) 

 thick, flesh succulent, edible; calyx lobes persistent, erect or spreading. 



Distribution. Nova Scotia and Maine to southeastern Minnesota 

 and south in the mountains to North Carolina and Tennessee. 



Usually a large shrub but occasionally a small tree, sometimes 8 m. 

 (25 feet) high, with ascending branches. 



Specimens have been seen from the following counties: Allen (Beam) ; 

 Bartholomew (Deam) ; Clark (Beam) ; Becatur (Beam) ; Fulton (Beam); 

 Hancock (Mrs. Chas. C. Beam); Madison (Beam); Porter (Beam); 

 Randolph (Beam) ; Shelby (Mrs. Chas. C. Beam) ; Washington (Beam); 

 Wells (Beam); Whitley (Beam). 



Crataegus macrosperma Ashe. var. matura (Sargent) Eggleston. 

 Lobes of the leaves acuminate, often recurved ; fruit ripens early. 



Distribution. Known in Indiana only from Beam's specimen 

 No. 14187 from Wells County. 



13. Crataegus basilica Beadle. (Crataegus alnorum Sargent. 

 Crataegus Edsoni Sargent). EDSON'S THORN. Plate 89. Bark brown, 

 scaly; spines 2.5-4 cm. (1-1> inches) long, stout, curved; leaves ovate, 

 3-7 cm. (1 i/-2 34 inches) long, acute at the apex, broadly cuneate 

 or truncate at base, serrate or doubly serrate with acute lobes, dull 

 dark yellow-green above, paler beneath; corymbs glabrous, many flower- 

 ed; flowers 15-20 mm. (^-J^ inch) broad; stamens about 20; anthers 

 pink; styles and nutlets 3-5; fruit subglobose, slightly angular, dark 

 cherry-red, 12-15 mm. (^-^ inch) thick, flesh succulent; calyx lobes 

 erect or spreading. 



Distribution. New England to southern Michigan, northern 

 Indiana and Pennsylvania to mountains of North Carolina and Ten- 

 nessee. 



A broad shrub or small tree sometimes 4.5 meters (15 feet) high, 

 branches ascending. 



Specimens examined: Wells (Beam). 



14. Crataegus Jesupi Sargent. JESUP'S THORN. TWIN MOUN- 

 TAIN THORN. Plate. 90. Bark grayish-brown; spines stout, straight 

 2-4 cm. (%-l Yi inches) long; leaves elliptical-ovate, 3.5-7 cm. (1^-3 

 inches) long, 2-5.5 cm. (1-2 inches) wide, acute or acuminate at the apex, 

 broadly cuneate to truncate-cordate, serrate or doubly serrate, with 4 

 or 5 pairs of acute lobes, yellow-green above, paler beneath, glabrous; 



