COMPLIMENTARY 
NEW SERIES VOL. IV 
NO. 14 
ARNOLD ARBORETUM 
HARVARD UNIVERSITY 
BULLETIN 
OF 
POPULAR INFORMATION 
JAMAICA PLAIN. MASS. OCTOBER 25, 1918 
Hawthorns handsome in the autumn. Some of the American Haw- 
thorns are more beautiful when their fruits ripen in the autumn than 
they are when the white flowers cover the branches in the spring and 
early summer, and there are great horticultural possibilities in these 
plants which are particularly valuable in those parts of the country 
where the soil is impregnated with lime. Indeed American Hawthorns, 
although they do not require lime, are lime-loving plants, and the 
largest number of species and the handsomest plants are found where 
lime abounds. In the parks of cities like Chicago, St. Louis and 
Pittsburg, where the smoke of bituminous coal is fatal to many plants, 
it has been found that American Hawthorns grow better than most 
trees and shrubs. It is impossible in one of these Bulletins to do more 
than mention briefly a few species which are exceptionally beautiful 
at this season and have shown themselves v/ell suited for general cul- 
tivation. 
Crataegus arkansana. This tree is a native of the valley of the 
White River in central Arkansas and was first raised in the Arboretum 
in 1880. It belongs to the Modes Group of the genus which is distin- 
guished by its large usually tomentose leaves, large flowers and large 
scarlet, or rarely yellow, edible fruit. Like the other species of the 
group, C. arkansana is a tree which in the deep rich soil of Arkansas 
bottom-lands sometimes grows to the height of forty feet. The fruit of 
many of the species of this group, like C. Arnoldiana and C. mollis, 
ripens in August and September and soon falls; that of C. arkansana 
does not ripen until the middle of October when the leaves are still green 
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