ROSACEA. SILVA OF NORTH AMERICA. 
99 
CRATAiGUS CORUSCA. 
Haw. 
STAMENS 20; anthers pale pink. Leaves ovate, firm, bright, and shining. 
Crategus corusca, Sargent, Bot. Gazette, xxxiii. 117 (1902). 
A tree, eighteen or twenty feet in height, with a tall trunk eight or ten inches in diameter, and 
wide-spreading branches which form a handsome symmetrical head. The bark of the trunk is thin, 
light gray-brown, and broken into small closely appressed scales. The branchlets are stout, marked by 
numerous small white lenticels, and armed with thick nearly straight bright chestnut-brown spines often 
three inches in length; dark green and coated with matted pale hairs when they first appear, during 
their first summer they become bright red-brown, and in their second year light orange-brown and very 
lustrous. The leaves are ovate, acute, truncate, rounded or slightly cordate at the broad base, regularly 
divided into four or five pairs of short acute lateral lobes, and doubly serrate, with straight slender 
glandular teeth ; in early spring they are covered on the upper surface with short soft pale hairs and 
are glabrous on the lower surface, and at maturity, although thin, they are firm and rigid in texture, 
glabrous, dark yellow-green and very bright and shining above, pale yellow-green below, and from 
two inches to two inches and a half long and wide, with slender pale midribs and primary veins only 
slightly impressed on the upper side; they are borne on slender, nearly terete, slightly grooved petioles 
which, villose at first, soon become glabrous and dark red below the middle, and are from one inch and 
a half to two inches and a half in length. The stipules are narrowly obovate, acute, and coarsely 
glandular-serrate. On vigorous leading shoots the leaves are frequently divided into narrow acute 
lobes, and are from three and a half to four inches long and wide, with lunate coarsely dentate 
stipules from one half to three quarters of an inch broad. The flowers, which are three quarters of an 
inch in diameter, open about the middle of May and are borne in compact rather narrow compound 
many-flowered corymbs covered with matted pale hairs, and furnished with linear-lanceolate or narrowly 
obovate glandular-serrate bracts and bractlets. The calyx-tube is broadly obconic, and glabrous or 
villose below, and the lobes, which are gradually narrowed from broad bases, are acute, coarsely 
glandular-serrate, and villose on the inner surface. There are twenty stamens with small pale pink 
anthers, and four or five styles. The fruit begins to ripen and fall about the twentieth of September, 
and continues to fall until the end of October; it is borne in glabrous drooping few-fruited clusters on 
stout pedicels which vary from three quarters of an inch to nearly an inch in length; it is oblong 
or obovate, bright cherry-red, lustrous, marked by scattered dark dots, from five eighths to three 
quarters of an inch in length and from one half to five eighths of an inch in width; the calyx-cavity is 
deep but comparatively narrow, and the lobes are gradually narrowed, acute, slightly glandular-serrate, 
and usually deciduous before the fruit ripens; the flesh is thick, yellow, dry, and mealy. The four or 
five nutlets are dark-colored, rounded on the back, and a quarter of an inch long. 
Crataegus corusca inhabits the sandy shores of Lake Zurich in Lake County, Illinois, where it was 
discovered in September, 1899, by Mr. E. J. Hill.’ 
1 Ellsworth Jerome Hill (December 1, 1833) was born at Le 
Roy, New York, where his father, a descendant of one of the colo- 
nists from England who settled at Guilford, under Nathaniel Whit- 
field, had moved from Middlesex County, Connecticut. An early 
love of reading induced his parents to allow the boy to attend a 
village academy during the winter months with the idea of his 
becoming a teacher ; the summers were spent in helping his father 
in farm work. In order to secure a college education he engaged 
in teaching while still a boy, but his health breaking down he was 
obliged to reside for three years in the south, and it was not until 
1860 that Mr. Hill entered the Union Theological Seminary in the 
city of New York. Graduating three years later, he went to Illinois 
