Article from Bean's Trees and Shrubs Hardy in the British Isles
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'Prunus pilosiuscula' from the website Trees and Shrubs Online (treesandshrubsonline.
A deciduous shrub or a small tree sometimes 40 ft high, with a trunk over 1 ft in diameter; young shoots sparingly hairy or glabrous. Leaves oval or obovate, the base wedge-shaped to rounded or slightly heart-shaped, the apex contracted to a slender point, conspicuously (often doubly) toothed, 11⁄2 to 4 in. long, about half as much wide; sprinkled with, and roughened by, short bristles above, more thickly on the midrib and veins beneath; stalk about 1⁄2 in. long. Flowers produced with the young leaves in April two to four on a main-stalk 1⁄4 to 1 in. long, the individual stalks up to 11⁄8 in. long or sometimes solitary; they are white, 3⁄4 in. wide; calyx-tube cylindrical to funnel-shaped with narrowly triangular more or less glandular lobes; style hairy towards the base; ovary glabrous. Fruits narrowly ovoid, 1⁄3 in. long, red, ripe in June. Bot. Mag., t. 9192.
Native of W. Hupeh, China; originally discovered by Henry about 1888; introduced by Wilson in 1907. It belongs to the same group of cherries as P. litigiosa, which has only axil-tufts of hairs beneath the leaves and a much shorter main flower-stalk. P. pilosiuscula varies a good deal in regard to pubescence and in the var. subvestita Koehne (Wilson No. 41), the flower-stalks, young shoots, and both sides of the leaves are downy or hairy. P. polytricha Koehne appears to be merely a still more downy or even shaggy variety of this species, the downiness extending to the calyx. All these are pretty but their blossom is somewhat evanescent.