52 MISSOURI BOTANICAL GARDEN BULLETIN 
DILATATAE GROUP 
Crataegus coccinioides—A tree 15-20 feet high covered 
with dark brown scaly bark. Branches stout, spreading, ight 
gray, forming a broad head; branchlets stout, nearly straight, 
smooth, bright chestnut-brown, shiny, armed with stout, red- 
dish purple, shining spines. Leaves broad-ovate, acute, full 
and rounded or square at the base, sharply serrate and di- 
vided above the middle into short lobes, about half grown 
when the flowers open in early May, at maturity thin, firm, 
rather rigid, dull dark green on the upper surface, pale 
beneath, turning orange and scarlet in autumn. Flowers white, 
in very compact 5—7-fiowered corymbs; stamens 20; anthers 
deep rose color. Fruit ripening in October, dark crimson. 
Habitat: on rich hillsides, near St. Louis, Missouri, and east- 
ern Kansas. 
Crataegus speciosa.—A tree 15-20 feet high. On rocky hills, 
Jasper County, Missouri. 
COCCINEAH GROUP 
Crataegus Margaretta.—A tree 20-25 feet high, with a 
straight trunk covered with thin, dark gray-brown bark. 
Branches small, rather erect, forming a narrow open head; 
branchlets slender, orange-green at first, becoming bright 
chestnut brown and shiny at the end of the season, and ashy 
gray tinged with red during the second year, armed with 
thin, straight or nearly straight, chestnut-brown spines. 
Leaves broad, oblong-obovate, acute or rounded at the apex, 
gradually narrowed to the base, coarsely doubly serrate 
above the middle, and divided into short rounded lobes, at 
maturity firm and leathery, smooth and dark green above, 
paler beneath. Flowers white, in 3-12-flowered corymbs; 
stamens usually 20; anthers light yellow. Habitat: in rich 
soil, St. Louis and Greene Counties in Missouri, Ontario, 
Michigan to Illinois, lowa and Tennessee. 
INTRICATAE GROUP 
Crataegus villicarpa.—A shrub 3-6 feet high, with small, 
pale gray stems. Branchlets slender, slightly zigzag, light 
red-brown, covered with long white hairs at first, becoming 
dull chestnut-brown and pubescent in their first year, and 
gray tinged with red the following year, armed with numer- 
ous slender, curved or straight, bright red-brown, shining 
