206 



Distribution. Western New England to central Michigan and 

 south to Pennsylvania and southern Indiana. 



A shrub or tree sometimes 9 meters (30 feet) high, with irregular 

 ascending branches. 



Specimens have been seen from Perry County, Beam's No. 27104. 



17. CrataegusGattingeriAshe. (Crataegus coccinea var. oligandra 

 Torrey and Gray). DR. CLAPP'S THORN. GATTINGER'S THORN. Plate 

 93. Spines numerous, 2.5-6 cm. (1-2 inches) long; leaves narrowly ovate 

 to deltoid, 2.5-6 cm. (1-2% inches) long, 2-5 cm. (%-2 inches) wide, 

 acuminate at the apex, broadly cuneate or rounded at the base, serrate 

 or doubly serrate, lobed towards the apex, membranaceous, glabrous, 

 dark green above; petioles glabrous, 2-3 cm. (%-li^ inches) long; 

 corymbs glabrous, many- flowered ; flowers appear in May, about 2 

 cm. (34 inch) broad; stamens 10-20; anthers small, pink; styles and 

 nutlets usually 3 or 4; fruit ripens in October, globose, angular, red, 

 slightly waxy, 0.8-1.2 cm. (%-% inch) thick, flesh hard; calyx tube 

 prominent, the lobes triangular, spreading. 



Distribution. Southern Pennsylvania and southern Indiana to 

 West Virginia and central Tennessee. 



Shrub or small tree sometimes 4.5 m. (15 feet) high, with ascending, 

 irregular branches. 



Specimens seen from: Floyd (Dr. Clapp, before 1840); Knox 

 (Schneck); Perry (Deam); Steuben (Deam); Wells (Deam). 



18. Crataegus pruinosa (Wendland) K. Koch. WAXY-FRUITED 

 THORN. Plate 94. Bark dark brown; spines numerous, slender, 3-6 

 cm. (1^-2% inches) long; leaves elliptic-ovate to broadly ovate, 

 2.5-6 cm. (1-2% inches) long and wide, acute or acuminate at the apex, 

 abruptly cuneate, rounded or occasionally cordate at the base, serrate 

 or doubly serrate with 3 or 4 pairs of broad acute lobes towards the 

 apex, blue-green, glabrous, membranaceous; petioles 2 or 3 cm. (% 

 li^ inches) long, glabrous; corymbs glabrous, many-flowered; 

 flowers appear in May, about 2 cm. (5/6 inch) broad; stamens 10-20; 

 anthers pink or sometimes yellow or white; styles and nutlets 4 or 5; 

 calyx lobes lanceolate-acuminate, entire", slightly serrate at the base; 

 fruit ripens in October, depressed-globose to short-ellipsoidal, strongly 

 angled, waxy, apple green, becoming scarlet or purple, 1.2-1.5 c.m. 

 (3/2-% inch), thick, firm, yellow, sweet; calyx tube prominent, the 

 lobes spreading, persistent. 



Distribution. Rocky, open woods, western New England to 

 Michigan and south to North Carolina and Missouri. Well distributed 

 in Indiana. 



