278 Eleventh Annual Report 



broadly ovate, acute at the apex, cordate to truncate at the base, 

 serrate or twice serrate with narrow acute lobes, 4-13 cm. (IJ^^-S 

 inches) long, 4-10 cm. (13^-4 inches) wide, shghtly rugose, densely 

 tomentose beneath, tomentose above, becoming scabrous, mem- 

 branaceous; petioles 2-4 cm. (M-13^ inches) long, tomentose; 

 corymbs tomentose, many-flowered; flowers appear in May, about 

 2.5 cm. (1 inch) broad, stamens about 20, anthers light yellow; 

 styles and nutlets 4 or 5; fruit ripens in September, short-ellip- 

 soidal to subglobose, scarlet, 1.5-2.5 cm. (H-1 inch) thick, calyx 

 lobes glandular-serrate, swollen, erect or spreading, deciduous, flesh 

 thick, yellow, edible. 



Distribution. Southern Ontario to South Dakota, south to cen- 

 tral Tennessee and Arkansas. This typical thorn of the central 

 prairie states is best at home on limestone bluffs and is well dis- 

 tributed over Indiana. 



A small tree often 13 m. (40 feet) high, with ascending and spread- 

 ing branches, forming a broad, round-topped crown. 



Specimens have been examined from the following counties : Cass 

 (Mrs. Ida Jackson) ; Gibson and Knox (Schneck) ; Montgomery and 

 Putnam (Grimes); Decatur, Delaware, Floyd, Henry, Knox, Madi- 

 son, Marion, Posey, Vermillion and Wells (Deam). 



18. Crataegus Phaenopyrum (Linnaeus fils) Medicus. Wash- 

 ington Thorn. Scarlet Haw. (C cordata Alton). Plate 97. 

 Bark grayish-brown, scaly; spines numerous, slightly curved, 2-5 

 cm. (^-2 inches) long; leaves ovate-triangular, 2-8 cm. (^-3 

 inches) long and wide, simply or doubly serrate, often 3-5 lobed, 

 acute at the apex, rounded to cordate at the base, bright green 

 above, glabrous; petioles slender, 1.5-5 cm. (3^-2 inches) long, 

 glabrous; corymbs glabrous, many-flowered; flowers appear in 

 June, 8-12 mm. (1/3-3^ inch) broad, stamens about 20, anthers 

 pink, styles and nutlets usually 5, calyx lobes deltoid, entire, de- 

 ciduous; fruit ripens in October or November, depressed-globose, 

 scarlet, 4-6 mm. (1/6-34 inch) thick, nutlets with a bare apex and 

 smooth back, flesh thin, firm. 



Distribution. Virginia to Georgia, Indiana to Arkansas. Moist 

 rich soil. NaturaHzed to Pennsylvania and New Jersey. Possibly 

 it may be naturalized at the Indiana station. More knowledge of 

 distribution in southern Indiana is needed to settle this question. 



A shrubby tree sometimes 9 m. (30 feet) high, with nearly erect 

 branches and an oblong crown. 



Specimens have been seen from: Wayne (Deam). It also occurs 

 in the Wabash Valley. 



