Here is a very poetic description that I am quoting verbatim because it is perfection, like this beautiful flowering cherry tree:

With flowers resembling a ballerina’s petticoat, award-winning Prunus ‘Ichiyo’ is a small, deciduous tree of spreading habit, with gracefully ascending main branches.

Opening from pink buds, profuse double, shell pink flowers appear in mid to late spring. Held in pendulous, long-stalked clusters of 3-4 flowers, they fade almost to white as they age.

The blooms are quite large, up to 2 inches across (5 cm), and they count up to 16-22 petals, nicely arranged around an open heart.

Emerging pale bronze-green, the leaves turn deep green in summer to create a fresh canopy and warm up to orange and red in fall.

‘Ichiyo’ means ‘one leaf’ in Japanese, in reference to the presence of a leaf-like pistil in the heart of the flower.

Information source: Gardenia.