

1901 } NORTH AMERICAN TREES 3 
anthers small, rose-color; styles two or three. Fruit globose, 
about ¥% in. in diameter, bright orange-red with a yellow cheek 
and thin dry green flesh; tube of the calyx prominent, the cavity 
broad in proportion to the size of the fruit, shallow; nutlets two 
or three, thick, prominently ribbed on the back with high rounded 
ridges, 4% in. long. 
A tree from 15 to 20 feet in height with a trunk 5 to 6 inches 
in diameter covered with dark brown scaly bark, wide-spreading 
usually horizontal branches forming a low flat-topped or a rounded 
head, and slightly zigzag branchlets marked with large scattered 
white lenticels, at first clothed with pale hairs, becoming nearly 
glabrous and reddish-brown during the first season and lighter- 
colored and gray, or gray tinged with red during their second 
year, and armed with remote slender straight or slightly curved 
chestnut-brown spines 1% to 2% in. long. Flowers from the 
end of April (Augusta, Ga.) to the end of May (Missouri). 
Fruit ripens early in November. 
Dry hillsides and slopes, often on limestone; less frequently 
along the low margins of meadows and roadsides. Kimmswick, 
Missouri, Dr. George Engelmann, May 1860; Pacific, Missouri, 
George W. Letterman, 1881; southern Missouri, &. 7. Bush (nos. 
86 and 19), 1898, 1899; West Nashville, Tennessee, 7. G. 
Harbison, May 1899; Tuscaloosa, Alabama, 7. G. Harbison, 
May 1899; Gunterville, Alabama, 7. G. Harbison, June 1899; 
Rome, Georgia, C. Boynton, May 4, 1899; Birmingham, Alabama, 
C. Boynton, January and July 1899; Washington Road near 
Augusta, A. Cuthbert and C. S. Sargent, April 1900. 
Well distinguished from Crataegus Crus-gallz, with which for many years 
it has been confounded, by its smaller thinner leaves roughened above by 
rigid hairs and pilose on the lower surface, more prominent primary veins and! 
villous or tomentose branchlets and cymes, Crataegus Crus-gaédi in all its. 
forms, as I now understand it, being perfectly glabrous, with veins which, 
except in the case of leaves on the most vigorous shoots, are usually almost: 
entirely within the parenchyma; by its smaller brighter red and yellow fruit ; 
and by its less numerous and more slender spines. 
Crataegus Canbyi, n.sp.—Glabrous. Leaves oblong-oval to 
ovate or r rarely obovate, pointed or occasionally rounded at the 
