White trillium, Trillium grandiflorum.

The spring-blooming flowers of white trillium (Trillium grandiflorum) start out white and fade to pink as the flowers age. A plant can live for at least 26 years (the age can be measured by rings on the rhizome, but rings older than 26 years are typically lost or obscured by rot). Trilliums will not flower until they are 15 years old. Population survival can be jeopardized in areas where they are heavily browsed by deer because the plants will die out after about 12 years of repeated browsing.