Common name: Pacific Trillium, Wakerobin, Western Trillium

USDA give 2 subspecies:
ssp. oettingeri (Oettinger's Trillium) (CA) dark spots on leaves.
ssp. ovatum (Pacific Trillium) wNA

Trillium species are divided into two subgenera: the pedicellate Trilliums and the sessile Trilliums. Our most common Northwest native, Trillium ovatum belongs to the pedicellate Trilliums, those that bear their single flower on a small stalk, or pedicel, above the juncture of the three green leaves. Another Trillium native to western Washington and Northwest Oregon is Trillium parviflorum; its sessile flower sits directly on the three leaves. Many of the sessile Trilliums also show maculation (dark spots) in their leaves.

Note those found on the western side of the Cascades generally have rounded petals which are
much smaller than the leaves. Those found east of Cascades generally have oblong petals which
are either same size to much smaller than the leaves. Also note both yellow to white stamens.
Leaves are technically bracts.

late phase flowers are pinkish. Some feel these are flowers which have been fertilized.

north Puget Sound; west Central Cascades; east Olympics, east WA; east Central Cascades; Columbia River Gorge (CRG)
TRAIL: Chuckanut Mtn.; Hope-Mig Lake; Tinkam USFS Road; Mt. Townsend (Little Quilcene Trail); Mt. Spokane Ski Area; USFS Blewett Pass Road; Dog Mountain;
HABITAT: Montane forest;
ELEVATION: 385 - 1,480 m (1,260 - 4,855 ft.)
BLOOM TIME: 29-APR; 27-JUN; 18-APR; 15-JUN; 28-MAY; 18-MAY; 30-MAY