
This is Erodium cicutarium, a small member of the Geranium family. It is native to Eurasia but was introduced to the Pacific Northwest of the U.S. in the late 1800's and is now widely established in eastern Washington. It goes by the common names of Filaree, Crane's-bill, or Stork's bill, mostly based on the shape of the long, sharp seed pod.
The flowers are about 10-15 mm across. They are a pretty shade of pink, but do not seem very ornate.
As shown in this post, however, the center of the flower is a different matter entirely.

Hope you enjoy!
--Rik
Technical: Canon 300D with Olympus 38mm f/2.8 bellows lens at f/4 and 6.5X onto the sensor, stacked at 0.0005" focus step. Helicon Focus software with some manual retouching to reduce stacking artifacts.