ROSACE. SILVA OF NORTH AMERICA. 43 
CRATAIGUS ENGELMANNI. 
Haw. 
STAMENS 10; anthers rose color. Leaves broadly obovate or elliptical, coriaceous, 
villose. 
Cratzegus Engelmanni, Sargent, Bot. Gazette, xxxi. 2 Cratzgus berberifolia, Britton, Man. 519 (in part) (not 
(1901). Torrey & Gray) (1901). 
A tree, from fifteen to twenty feet in height, with a trunk five or six inches in diameter covered 
with dark red-brown scaly bark, and wide-spreading usually horizontal branches forming a low flat- 
topped or a rounded head ; or occasionally shrubby. The branchlets are slender, straight or somewhat 
zigzag, marked by large pale lenticels, and armed with few thin straight or slightly curved chestnut- 
brown lustrous spines from an inch and a half to two inches and a half in length; when they first 
appear they are orange-brown or green tinged with red and covered with long pale hairs which soon 
disappear, and during their first summer they are nearly glabrous and bright red-brown, becoming 
lighter colored and gray or gray tinged with red during their second year. The leaves are broadly 
obovate or rarely elliptical, rounded or often short-pointed and acute at the apex, gradually narrowed 
or entire below, and finely crenulate-serrate usually only above the middle and generally only at the 
apex ; nearly fully grown when the flowers open about the middle of May, they are then roughened 
above by short rigid pale hairs, and at maturity they are coriaceous, dark green, lustrous, and scabrous 
on the upper surface, pale on the lower surface, pilose above and below along the slender midribs and 
on the obscure primary veins and veinlets, from an inch to an inch and a half long and from half an 
inch to an inch wide; they are borne on slender grooved glandular petioles winged above by the 
decurrent bases of the leaf-blades, at first slightly villose but soon glabrous, and usually about a quarter 
of an inch in length. The stipules are linear-lanceolate, glabrous, light red, one third of an inch long, 
and caducous. The flowers, which are three quarters of an inch in diameter, are produced on slender 
pedicels, in broad loose eight to twelve-flowered thin-branched villose corymbs, with linear-lanceolate 
or narrowly obovate tomentose or villose glandular-serrate bracts and bractlets. The calyx-tube is 
narrowly obconic, villose, or nearly glabrous, and the lobes are narrow, acuminate, entire, glabrous 
on the outer surface, usually puberulous on the inner surface, and reflexed after the flowers open. 
There are ten stamens with long slender filaments and small rose-colored anthers, and two or three 
styles. The fruit, which ripens early in November, hangs on slender pedicels, in drooping many- 
fruited glabrous clusters; it is globose or short-oblong, bright orange-red, with a yellow cheek, and 
about a third of an inch in diameter; the calyx is prominent, with a broad shallow cavity, and enlarged 
spreading lobes which usually fall before the fruit ripens; the flesh is thin, green, dry, and mealy. 
The two or three nutlets are thick, prominently ridged on the back, with high rounded ridges, and a 
quarter of an inch long. 
Crategus Engelmanni inhabits dry limestone slopes and ridges, and is common through central 
and southern Missouri.! Long confounded with Crategus Crus-galli, 1t appears to have been first 
collected at Kimmswick at the mouth of the Maramec River by Dr. George Engelmann. 
1 The first description of Crategus Engelmanni was made to been referred by Mr. C. D. Beadle to his Crataegus sinistra (Bilt- 
include a number of specimens of Crus-galli-like species with more more Bot. Studies, i. 44 [1901]); and further study in the field is 
or less pilose leaves and villose corymbs collected at West Nash- needed before it can be satisfactorily determined whether any of 
ville, Tennessee, in northern and central Alabama, and at Rome the forms of the Crus-galli group growing east of the Mississippi 
and Augusta, Georgia. The specimens from Nashville have since River belong with Crategus Engelmanni. 
