Dwarf Owl's Clover

 Triphysaria pusilla- Dwarf Owl's Clover 
Purple owl’s clover is a crucial host plant for the threatened Bay checkerspot butterfly.
Stem slender, branched, prostrate, with growing tips turned upward. Leaves tiny, lobed many times, often coated with fine purplish or yellow-brown hairs. Tiny flowers hidden among bracts, reddish purple or sometimes yellow, include 3 shallow pouches below hooked beak. Grows in grasslands at low elevations. 
Rarity: Locally Common, Flowering Time: Mid Spring, Life Cycle: Annual, Height: 1--6 inches, Habitat: Meadow, Found In: Olympic Np, Native: Yes

Bay checkerspot butterfly - endangered in 2022.