Achyronychia cooperi
A small annual plant of the Sonoran and Mojave deserts. Similar to Paronychia--but unusual among caryophyllacids--in lacking petals.
Plant habit about 10 miles west of Bahia de Los Angeles in Baja California, 10/21/06.
Flowers about 10 miles west of Bahia de Los Angeles, 10/21/06.