203 



petioles slender, 2-3.5 cm. (^-li/ inches) long, slightly winged above; 

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

 (5/6 inch) broad; stamens about 10; anthers dark red; styles and nut- 

 lets usually 3 or 4; calyx lobes entire; fruit ripens in October, short- 

 ellipsoidal to pyriform, dark red, slightly angled, lacking bloom when 

 mature, about 1 cm. (^ inch) thick, flesh yellow, firm; calyx lobes 

 mostly deciduous. 



Distribution. Western Vermont, to southwestern Wisconsin and 

 south to Pennsylvania and Owen County, Indiana. 



A shrubby tree, sometimes 6 m. (20 feet) high, with ascending branch- 

 es and a round crown. 



Specimens examined: Owen (Mrs. Chas. C. Deam). 



15. Crataegus rugosa Ashe. (Crataegus deltoides Ashe). FRETZ'S 

 THORN. Plate 91. Spines numerous, 3-6 cm. (1 J4-2H inches) long, 

 stout curved; leaves broadly ovate, 3-7 cm. (l-2<^ inches) long and 

 broad, acute or acuminate at the apex, cordate or truncate at the base, 

 serrate or twice serrate with 4-6 pairs of broad acuminate lobes, glabrous, 

 membranaceous; petioles 1-3 cm. (%-!% inches) long, glabrous; 

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

 (5/6 inch) broad; stamens 10-20; anthers pink; styles and nutlets 

 usually 4 or 5; calyx lobes deltoid-acuminate, entire or slightly serrate 

 at the base; fruit ripens in October, depressed-globose, bright red, 

 angular, glabrous, waxy, 1-1.5 cm. (J^-% inch) thick, flesh yellow, 

 somewhat succulent; calyx lobes persistent, spreading, the tube rather 

 prominent. 



Distribution. Southwestern New England to southern Indiana 

 and the mountains of North Carolina. 



A shrub or tree sometimes 6 m. (20 feet) high, with ascending branches 

 and an irregular crown. 



Specimens examined: Allen (Deam); Decatur (Deam); Grant 

 (Deam); Jennings (Deam); Owen (Deam); Perry (Deam); Wells 

 (Deam). 



16. Crataegus filipes Ashe. Miss BECKWITH'S THORN. (Cratae- 

 gus silvicola var. Beckwithae (Sargent) Eggleston. Plate 92. Spines 

 numerous, curved, chestnut-brown, 2.5 to 6 cm. (1-2^ inches) long; 

 bark slightly scaly; leaves 2-7 cm. (^-2^ inches) long, 2-6 cm. 

 (5"2H inches) wide; leaves ovate, acute or acuminate at apex, 

 rounded, truncate or on vegetative shoots cordate at base, serrate or 

 doubly serrate, lower pair of acuminate lobes often deeply cut, mem- 

 branaceous, glabrous; corymbs glabrous; flowers about 2 cm. (% inch) 

 broad; stamens about 10; anthers pink; styles and nutlets 3-5; fruit 

 globose or compressed globose, cherry-red, 8-10 mm. (^ inch) thick, 

 ripens in October. 



