84 SILVA OF NORTH AMERICA. ROSACEA. 
of an inch to an inch in diameter, and surmounted by the prominent hairy calyx, with a broad deep 
cavity and enlarged erect and incurved lobes which mostly fall before the fruit ripens; the flesh is 
thick, yellow, subacid, dry, and mealy. The four or usually five nutlets are thin, rounded and some- 
times obscurely ridged on the back, light brown, and a quarter of an inch long.’ 
Crategus mollis grows in low rich soil usually on the bottom-lands of streams, and is distributed 
from northern Ohio? to eastern Dakota* and Nebraska,* eastern Kansas, and central Tennessee. 
1 In the fourth volume of this work several Thorn-trees which  tiliefolia, Lange (Rev. Gen. et Spec. Crategi, 31), is not distin- 
are now believed to be distinct species were united with the Cra- guishable from specimens of Cratcegus mollis gathered in Illinois. 
teegus mollis of Scheele, originally described from specimens gath- 2 E. L. Moseley, Perkins, Essex County, 1895. 
ered in Illinois. Scheele’s description leaves little doubt of the 8 D. H. Saunders, Bull. 64, South Dakota Agric. College, 157 
identity of his species with the common large-fruited Thorn of (Ferns and Flowering Plants of South Dakota). 
Illinois and the neighboring states, which I now call Crategus * Bessey, Rep. Neb. State Board Agric. 1899, 87 (The Forests 
mollis, although it does not include an account of the flowers. and Forest Trees of Nebraska). 
A flowering specimen of a tree cultivated in Germany, sent to me 5 A. Gattinger, without date. 
by Professor Koehne of Berlin as a representative of Crataegus 
EXPLANATION OF THE PLATE. 
Puate DCLIX. Cratr#eus MOLLIS. 
. A flowering branch, natural size. 
. Vertical section of a flower, enlarged. 
. A calyx-lobe, enlarged. 
. A fruiting branch, natural size. 
Cross section of a fruit showing the nutlets, natural size. 
. Vertical section of a fruit, natural size. 
. A nutlet, side view, enlarged. 
. A nutlet, rear view, enlarged. 
WOWOAATAP ww 
. A leaf of a shoot, somewhat reduced in size. 
