CRATAEGUS 157 



Perhaps common from the region of Minneapolis southward and west- 

 ward. Distributed from southern Ontario to eastern S. Dak., eastern Kan., 

 and south to Mo. and Ky. This species is said to be the largest and 

 handsomest of the scarlet hawthorns of North America. The wood is 

 light brown or red, close grained and hard and weighs 49 lbs. Blossoms 

 in May, fruits in September. 



Crataegus rotundifolia Moench 1794 Glandular Thorn 



A shrub or small tree, 3-5 meters (9-15 ft.) high; bark smooth, green- 

 ish gray; branches spiny, spines 3-5 cm. long; leaves ovate, orbicular or 

 obovate, broadly cuneate at the base, acute at the apex, 3-4 pairs of lobes, 

 doubly serrate, entirely glabrous, 3-6 cm. long, 3-6 cm. wide; corymbs 

 glabrous or slightly pubescent; flowers white, about 1.5 cm. broad, calyx 

 lobes lanceolate, glandular serrate, slightly villous inside, about 5 mm. 

 long; stamens 5-10, styles 2-4; fruit 1 cm. long, red, flesh yellow, sweet: 

 rotundifolia, round leaved. 



Common throughout the state. Occurs from Nova Scotia to southern 

 Minn, and northern 111., in the Alleghenies, south to Va. Flowers in May, 

 fruit ripe in September. 



Crataegus macracantha L o d d i g e s 1854 Long-spined Thorn 



A bushy tree, 3-6 meters (10-20 ft.) high; bark ashy gray or light 

 brown; thorns on the straggling branches 5-10 cm. long, bent, chestnut 

 brown, on the main stem 7-20 cm. long and branched; leaves rhombic- 

 ovate to obovate, wedge-shaped and contracted below into the wide petiole, 

 acute at the apex, sharply lobed, doubly and sharply serrate, coriaceous 

 and shiny above, slightly hairy on the veins beneath, 2-8 cm. long, 2.5-6 

 cm. wide; corymbs slightly villous; flowers 1.5-2 cm. broad; sepals glan- 

 dular, about 4 mm. long; stamens 10; styles 3-4; fruit sub-globose, 8-10 

 mm. in diameter ; nutlets 3-4, 5-7 mm. long : macracantha, with 

 long thorns. 



Common throughout the eastern and southeastern parts of the state. 

 Distributed from Novia Scotia to Manitoba, southward in the mountains 

 to Virginia. 



The wood is brown and tinged with red, hard and close grained. Flow- 

 ers in May, fruit ripe in Sept. 



Yar. succulenta (Schrader) Eggleston 1908 



A variety with somewhat larger fruit and about 20 stamens. Occurs 

 with the species. 



