148 SILVA OF NORTH AMERICA. ROSACEZ. 
many-fruited usually slightly villose clusters; it is globose, often hairy at the ends until nearly ripe, 
when it is crimson, very lustrous, and from one quarter to one third of an inch in diameter ; the calyx- 
cavity is broad and shallow, and the lobes, which are much enlarged, are coarsely serrate, reflexed, and 
persistent ; the flesh is thin, dark yellow, dry, and mealy. The two or three nutlets are ridged on 
the back, with broad high ridges, and are penetrated on each of the imner faces by a deep irregular 
depression. 
Crategus macracantha is distributed from the valley of the St. Lawrence River in the neighbor- 
hood of Montreal through New England, and southward to eastern Pennsylvania and through the 
region south of the Great Lakes to northern Illinois and southern Wisconsin, growing usually on rich 
hillsides often in limestone soil, and near the banks of streams. 
EXPLANATION OF THE PLATE. 
Puare DCLXXXIX. Cratr#eus MACRACANTHA. 
. A flowering branch, natural size. 
. Vertical section of a flower, enlarged. 
. A fruiting branch, natural size. 
. Cross section of a fruit, enlarged. 
. A nutlet, front view, enlarged. 
ao oP Wid 
. A nutlet, side view, enlarged. 
