Greek physa— bladder, referring to the inflated follicular fruits.

Deciduous shrubs with bark peeling in thin strips. Leaves alternate, 3-5-lobed, venation mostly palmate with 3-5 veins, margins toothed or scalloped; stipules small, toothed. Flower clusters flat-topped. Flowers white or pinkish. Stamens 20-40, inserted on a disk.ovary superior. Carpels united and containing 2-5 ovules. Fruit a cluster of inflated follicles.

Grown as border shrubs.

10 species from E Asia and N America.

Seed or hardwood cuttings.

Leaves toothed and lobed; fruit follicles inflated.

Source: Spencer, R. (2002). Rosaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.