Thysanocarpus curvipes  Lacepod
ANNUAL.  Photo shows the ripe disc-shaped pods, .5 cm in diameter, each with a single seed and a rim of radiating lobes pierced with holes.  Flowers white, very tiny, with four pointed oval petals and four notched sepals.  The pods are the only conspicuous part of the plant.  March-June.  Common in the Empires in dry, sandy areas at lower elevations.
FAMILY:  Brassicaceae (Mustard Family)