About Trillium angustipetalum (Torr.) J.D.Freeman
Trillium angustipetalum is a rhizomatous perennial herb. It produces one or more erect stems that can grow up to 70 centimetres (28 inches) tall. A whorl of three large leaves, generally referred to as bracts, sits on the stem. Each bract can reach up to 25 centimetres (9.8 inches) in length, and is round or somewhat oval in shape. The bracts are green, mottled with brownish or darker green spots. Each stem bears a single flower, positioned on top of the whorl of bracts. The flower has an unpleasant scent, with three lance-shaped green or red sepals and three narrow purple or maroon petals that measure up to 11 centimetres (4.3 inches) long. This plant is native to northern and central California and southwestern Oregon. It grows in forests, woodlands, chaparral, and riparian zones. It can be found in the Klamath Mountains, the western foothills of the Sierra Nevada, and the Outer Southern California Coast Ranges.
