

1901] NORTH AMERICAN TREES 223 
31:7. 1901) of the same region it differs in its broader darker green more 
villose leaves which are usually rounded, not cuneate, at the base, in its 
smaller flowers, subglobose, not oblong or pear-shaped, crimson fruit with 
smaller spreading calyx-lobes, borne on shorter peduncles and ripening two 
or three weeks earlier, and by its much more zigzag and more spiny branches 
which make this tree particularly noticeable in winter when it may be readily 
recognized from all other thorn trees. From Crataegus Champlainensts 
(Sargent, Rhodora 3: 20), another of the eastern species of the mo//is group 
with ro stamens, it differs in its larger thinner leaves which are yellow-green, 
not blue-green, in its smaller subglobose, not oblong or obovate, early- 
ripening fruit, the fruit of Crataegus Champlainensis beginning to ripen early 
in September and remaining on the branches until midwinter. It differs also 
from this northern species in the form of the fruiting calyx and in its much 
more zigzag branchlets. 
V Crataegus Arkansana, n. sp.— Leaves oval to oblong-ovate, 
acute at the apex, broadly cuneate, or on vigorous leading shoots 
occasionally rounded at the base, usually divided above the 
middle into three or four pairs of short broad acute lobes, 
sharply serrate, sometimes to the very base, with spreading 
gland-tipped teeth; in early spring coated with short soft pale 
hairs, particularly on the under surface of the midribs and veins, 
and at maturity thick and leathery, dark dull green and glabrous 
on the upper surface, pale yellow-green on the lower surface, 
from 2 to 3 in. long, from 134 to 2 in. wide, or on vigorous 
shoots often 4 in. long and 3 in. broad, with stout light yellow 
midribs and primary veins deeply impressed above and slightly 
villose below with scattered pale hairs, conspicuous secondary 
veins and reticulate veinlets; petioles stout, deeply grooved, 
more or less winged above, glandular with minute usually decid- 
uous dark glands, tomentose, ultimately glabrous or puberulous, 
usually dull red in the autumn, from I to 1% in. long; stipules 
glandular-serrate, villose, linear-lanceolate to linear-obovate, 
about % in. in length. Flowers 1 in. in diameter in broad com- 
pound many-flowered thin-branched villose corymbs ; bracts and 
bractlets oblong-ovate, acuminate, finely glandular- serrate ; 
calyx-tube narrowly obconic, coated with long matted pale hairs, 
the lobes short, acute, very coarsely glandular-serrate, glabrous 
or slightly villose; stamens 20; filaments slender ; anthers large, 
