Printed at http://plantfinder.nativeplanttrust.org/index.cfm/
Trillium grandiflorum 'multiplex'
Multiplex great white trillium
T. grandiflorum has an easy-going nature and will form a dense patch-- just give it a decade or so. White, pedunculate flowers will turn pink after pollination as a cue to passing bees to find a better meal. 'Multiplex' has twice as many petals.