262 Eleventh Annual Report 



6. Crataegus neo-fluvialis Ashe. New River Thorn. Plate 85. 

 Bark grayish; spines numerous, 2.5-8 cm. (1-3 inches) long; leaves 

 elliptical-ovate to obovate, 2.5-8 cm. (1-3 inches) long, 2-6 cm. (^ 

 23^^ inches) wide, acute or obtuse at the apex, cuneate at the base, 

 sharply and doubly serrate, with obtuse or acute lobes towards the 

 apex, coriaceous, dark green and shining above, pubescent along 

 the veins beneath; petioles 1-2 cm. {%-% inch) long, slightly winged 

 above; corymbs and calyx-tubes glabrous or slightly villous, many- 

 flowered; flowers appear in May, 1.2-1.6 cm. (H-2/3 inch) broad, 

 stamens 15-20, anthers usually pink, small, styles and nutlets usually 

 2 or 3, calyx lobes more villous on the inside, lanceolate-acuminate, 

 glandular-laciniate; fruit ripens in September, globose or short ellip- 

 soidal, dark red, 4-12 mm. (M-3^ inch) thick, glabrous or shghtly 

 hairy; calyx lobes reflexed, flesh thin, glutinous; nutlets with deep 

 pits on the inner faces. 



Distribution. Western Vermont to eastern Wisconsin, Iowa and 

 south in the AUeghenies to North Carolina. 



A small tree sometimes 9 m. (30 feet) high, with ascending and 

 spreading branches. 



Specimens have been seen from Wells County (Deam). 



7. Crataegus Calpodendron (Ehrhart) Medicus. Pear-thorn. 

 Pear or Red Haw. Plate 86. Bark pale gray to dark brown, 

 furrowed; spines occasional, slender 3-5 cm. (1^/^-2 inches) long; 

 leaves rhombic-ovate, 4-11 cm. (13^-43/2 inches) long, 3-8 cm. (13^-3 

 inches) wide, acute or acuminate at the apex, finely and doubly 

 serrate, those on the vegetative shoots obtuse and more entire 

 than the others, pubescent on both sides, becoming scabrate above, 

 subcoriaceous, dull green above; petioles about 2 cm, (J^ inch) 

 long, wing margined, glandular hairy; corymbs white-tomentose, 

 many-flowered; flowers appear in June, about 1.5 cm. (2/3 inch) 

 broad, stamens about 20, anthers small, pink, styles and nutlets 

 usually 2 or 3, calyx lobes lanceolate-acuminate, glandular-lacin- 

 iate; fruit ripens in September, pyriform to ellipsoidal, orange-red 

 or red, 8-10 mm. (1/3 inch) thick; calyx lobes reflexed; flesh glu- 

 tinous, nutlets with deep pits in their inner faces. 



Distribution. Central New York, northeastern New Jersey to 

 Minnesota and Missouri and south in the mountains to northern 

 Georgia. 



A large shrub or occasionally a tree 6 m. (20 feet) high, with 

 ascending branches forming a broad crown. 



Specimens have been examined from the following counties : Mar- 

 ion and Posey (Deam); Putnam (Grimes); Wells (Deam). 



