Three green leaves surround three white petals surround a cream-colored, three-parted pistil–each part offset from the other to form a lovely pattern. The whole thing sits perched atop a slim stalk like an elaborate parasol. This large, striking flower is Pacific trillium (Trillium ovatum, also known as wake robin). Ankle-high groves of it are in bloom along the steep ravine trail on Mt. Tamalpais; a stunning sight beneath the towering redwoods: beauty above and beauty below.
This low-growing perennial thrives on shady hillsides and other places that stay moist but are well drained. Trillium is a member of the Melanthiaceae (the false hellebore family, which is a close relative of the lily family) and like lilies it has all of its parts in sets of three, including six yellow stamens. The white flowers turn purple as they age. Each year a fresh stalk sprouts from an underground rhizome.
The plant was used medicinally by various Native American tribes, but only externally–as far as I can tell. An infusion made from the roots was used as a wash for sore eyes, and to treat boils. The Skagit considered it poisonous.
Trillium has also been used as a love potion–the Makah tribe would apply a poultice made of pounded roots as a love medicine; unfortunately my reference doesn’t say what the desired result is, or where the poultice is applied.