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A tree up to 30 or 40 ft high, with a wide-spreading head of glabrous, grey branches; young branchlets covered with whitish hairs the first season; thorns 1 to 2 in. long. Leaves broadly ovate, rounded, truncate or heart-shaped at the base, pointed, with four to seven shallow lobes at each side, and very sharply glandular-toothed; 2 to 41⁄2 in. long, and nearly or quite as broad; both surfaces, but especially the lower one, downy, the upper becoming rather rough in the latter part of the season; stalk 1 to 2 in. long. Flowers white, 1 in. across; flower-stalks and calyx thickly coated with white hairs; calyx-lobes toothed and glandular, stamens about twenty; anthers pale yellow; styles four or five. Fruit subglobose, 3⁄4 to 1 in. diameter, red, downy.
Native of the Central United States; long introduced, but much confused with C. chrysocarpa, a thorn with shoots soon glabrous, leaves more or less tapered at the base, flowers with only ten stamens, and fruit only 1⁄2 in. across. C. mollis is also well distinguished by its larger leaves being always downy (very much so when young). As a flowering tree it is one of the most beautiful of thorns, and as a fruit-bearer is also handsome, but its fruits drop early (in September), a month or six weeks in front of those of C. chrysocarpa.
C. mollis is made the type of a group of American thorns by Sargent, which contains a number of very fine species, amongst which the following may be mentioned:
C. arkansana Sarg. A tree 20 ft high, native of Arkansas; differing from C. mollis in the fruits being of longer, more oblong shape, and ripening in October; the leaves also are generally more tapered at the base. I saw a fine specimen in the Arnold Arboretum, and was struck by its great elegance of habit. Introduced in 1902. It is now considered to be part of the normal variation of C. mollis.