Trillium grandiflorum f. roseum

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Liliopsida	Monocots (plants with a single seed leaf); includes the lily family
Subclass	Liliidae	Includes lilies, orchids, and many others
Order	Liliales	Includes lilies, tulips, trilliums, greenbriars, and others
Family	Melanthiaceae	Trillium family
Genus	Trillium	“Three-petaled lily”
Species	grandiflorum	Large-flowered
f.	roseum	Rosy-colored

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Trillium grandiflorum f. roseum description by Thomas H. Kent, last updated 12 Oct 2018.

5/14/2012 · Acton Arboretum, Acton, MA
≈ 15 × 10" (39 × 26 cm) ID is uncertain