ROSACEZ!. SILVA OF NORTH AMERICA. 113 
CRATAIGUS DILATATA. 
Red Haw. 
STAMENS 20; anthers rose color. Leaves broadly ovate, membranaceous, dark 
green. 
Cratzgus dilatata, Sargent, Bot. Gazette, xxxi. 9 (1901). 
A tree, occasionally twenty feet in height, with a tall straight stem covered with light gray-brown 
bark broken into small thick plate-lke scales, and spreading branches which form a wide round-topped 
symmetrical head; or often a tall broad shrub with many stout stems. The branchlets are slender, 
glabrous, slightly zigzag, marked by numerous large pale lenticels, and armed with few stout straight 
light chestnut-brown shining spines from one to two inches in length, or occasionally nearly spineless; 
when they first appear they are dark green more or less tinged with red, and during their first summer 
they become light chestnut-brown and very lustrous and ashy gray in their second year. The leaves 
are broadly ovate, acute, truncate, cordate or slightly rounded at the broad base, coarsely and except at 
the base generally doubly and irregularly serrate, with straight teeth tipped with large dark glands, and 
unequally lobed, usually with two or three pairs of acute or acuminate lateral lobes; when the flowers 
open at the end of May they are about a third grown and are then light yellow-green, conspicuously 
plicate, roughened on the upper surface by short stiff white hairs and glabrous on the lower surface, 
and in the autumn they are smooth and glabrous, dark green above, pale below, from two inches to two 
inches and a half long and almost as wide as they are long, with slender midribs and four or five pairs 
of thin primary veins only slightly impressed on the upper side; they are borne on slender grooved 
somewhat glandular petioles, at first villose but soon glabrous, often dark red toward the base after 
midsummer, and from one to two inches long. The stipules are linear-lanceolate, glandular, with dark 
red glands, and caducous. On vigorous leading shoots the leaves are often four or five inches long 
and frequently rather broader than they are long, and their stipules are foliaceous, lunate, and often 
half an inch in length. The flowers are from an inch to an inch and an eighth in diameter, and are 
produced on slender elongated pedicels, in broad loose many-flowered compound slightly villose corymbs, 
with lanceolate bracts and bractlets glandular, like the inner bud-scales, with dark red glands. The 
calyx-tube is broadly obconic, covered toward the base with matted pale hairs or nearly glabrous, and 
the lobes are broad, acuminate, coarsely glandular, with large stalked dark red glands, glabrous on the 
outer surface and generally slightly villose on the inner surface. There are twenty stamens with slender 
elongated filaments and large rose-colored anthers, and usually five styles surrounded at the base by 
small tufts of white hairs. The fruit, which ripens and falls early in September, hangs in many- 
fruited drooping clusters, and is subglobose, bright scarlet, lustrous, marked by numerous small dark 
dots, and about three quarters of an inch in diameter; the calyx is much enlarged, with a broad 
shallow cup and spreading coarsely serrate lobes bright red on the upper side of their broad bases ; the 
flesh is thin, sweet, and yellow. The five nutlets are comparatively small for the size of the fruit, 
rounded and prominently ridged on the back, and about a quarter of an inch long. 
Crategus dilatata grows along the low borders of salt marshes and estuaries from Ipswich to 
Somerset, Massachusetts, on the shores of Mount Hope Bay in Tiverton, Rhode Island, on rich hillsides 
