A diminutive species Trillium.New spring leaves emerge dark purple, almost black, and remain so as the 3cm white  flowers open (Fading to pink as they age),each petal has a rosy reverse.
This clone grows particularly quickly, making a substantial, clump in just a few years.

Never fails to draw attention during our open garden days.

Please note that this is a small species and the tubes are very small. 15cm x 15cm.