Stem erect, pair of opposite leaves clasping at midstem. Leaves nearly round, 1–3 in. long. Flowers small, few to 40 greenish yellow on upper 2–3 in. of stem. Flower has 3 sepals, 2 petals at top all about the same size, about 1/4 in. long; lower petal is longer; and broadly rounded at tip end, tapering toward center point, with a tiny thread-like tooth on each side near flower center. Grows in shady moist conifer forests, wet meadows, along streams, at mid elevations. Similar L. convallarioides, broad-leaved twayblade, has no teeth at top edge of lower petal, which is very narrow at base and also wide at tip end but notched with rounded lobes.
- Rarity: Uncommon
- Flowering Time: Mid Summer
- Life Cycle: Perennial
- Height: 4--12 inches
- Habitat: West-Side Forest, Coastal, East-Side Forest, Moist Riverbanks
- Found In: Wallowas, Crater Lake Np, Olympic Np, Mt. Rainier Np, West Gorge, N Cascades Np
- Native: Yes