P. macrophyllum is the sole member of this genus. It is from moist beech woods in Turkey and the Caucasus and is mostly used for a groundcover, although it is slow-growing. Its glossy leaves and broad, flat clusters of white, violet-like flowers appear in spring. The flowers have an unpleasant scent. Flat, distinctive fruit is then held above the foliage, extending the season of interest.
Noteworthy CharacteristicsGood groundcover beneath trees and shrubs.
CarePrefer partial shade in moderately fertile, moist, leafy soil.
PropagationSow seed in a cold frame in the fall. Divide or take basal stem cuttings in late spring.