toadshade or toad trillium (trillium sessile) with a whorl of three bracts (leaves)

trillium sessile blooming blossom bracts charming closeup clump delicate flora floral flowers garden gardening green growing leaves lovely macro nature ornamental outdoors petals plant purple red rock season sepals sessileflowered wakerobin single small spring springtime sunlight toad toadshade trimerous whorl close-up three reddish reddish-purple flower