59 
another specimen in the old Hawthorn Collection on the bank by the 
parkway boundary, near the Forest Hills entrance to the Arboretum. 
Crataegus succulenta. This is one of the large and handsome Thorns 
of the thick-leaved section of the Tomentosae Group of these plants, 
distinguished from all the other groups by the longitudinal cavities in 
the inner face of the nutlets of the fruit. C. succulenta is a tree 
sometimes twenty feet high with a short trunk, stout, wide-spreading 
branches, and thick, dark green and very lustrous leaves. The flow- 
ers are only about two-thirds of an inch in diameter but they are 
arranged in broad, many-flowered, lax clusters and are produced on 
long slender stalks. The fruit is also comparatively small and not 
more than three-quarters of an inch in diameter, but it is borne in 
large clusters on elongated gracefully drooping stems; it is bright 
scarlet and very lustrous, and the fruit of no other Thorn is more 
brilliant. A specimen of this plant in the old Hawthorn Collection is 
now covered with fruit. The leaves, which are still green, will later 
turn orange and scarlet. 
Crataegus nitida. This is a tree which under favorable conditions 
sometimes grows thirty feet high and forms a tall straight trunk 
eighteen inches in diameter, stout, wide-spreading lower branches and 
ascending upper branches forming a rather open flat-topped head. The 
leaves are narrow, pointed, two or three inches long and half as wide, 
dark green and shining above, paler below, and late in the autumn 
turn rich orange color through shades of bronze and orange-red. The 
flowers are rather less than an inch in diameter, and are arranged in 
broad many-flowered clusters thickly placed along the upper side of the 
branches. They are followed by oblong fruits about half an inch long 
and are borne on slender, much elongated stems. The fruit is red, 
covered with a glaucous bloom, and is now fully grown and colored, 
although it will not become ripe for two or three weeks. This Thorn 
is a native of the bottom-lands of the Mississippi River near East St. 
Louis, Illinois, and was first raised in the Arboretum thirty-six years 
ago. It is one of the handsomest of the whole genus, and if a selec- 
tion of six species as ornamental plants was to be made it would in 
the opinion of many persons be one of the six. There are several large 
specimens in the old Thorn Collection, 
Crataegus pruinosa. The tree of this species in the old collection is 
fruiting well again this year and is a good representative of one of the 
northern group called Pruinosae which contains some beautiful species. 
Crataegus pruinosa is a tree sometimes from fifteen to twenty feet 
tall with a small trunk and spreading branches forming a broad rather 
open head, or it often grows as a tall shrub with numerous intricately 
branched stems. The leaves are broad, thick, dark blue-green, and 
often covered with a pale bloom, and are now beginning to turn a dark 
orange color more or less passing into red. The flowers, which open 
here toward the end of May, are exceptionally handsome for they are 
about an inch wide and are conspicuous from the large, deep rose-col- 
ored anthers of the twenty stamens. The large globose fruit is apple- 
green, thickly covered with a glaucous bloom until after it is fully 
grown, becoming about the first of November when it ripens dark pur- 
