About Astragalus breweri A.Gray
Astragalus breweri A.Gray is a small annual herb that typically produces stems only a few centimeters long. Its small leaves are composed of widely spaced leaflets with notched tips. The inflorescence grows from a rough-haired peduncle and holds up to ten pealike flowers. Each flower is roughly one centimeter long, and may be colored white, yellow, or pale lavender, sometimes marked with light purple streaks. The fruit is an oval-shaped legume pod up to one centimeter long, tipped with a sharp beak. It holds 2 to 6 beanlike seeds. This species blooms between April and June. It is commonly found in or near volcanic slopes and serpentine outcrops. It is locally plentiful in the interior valleys and foothills of the Coast Ranges in California's southeastern Mendocino, Lake, Napa, and Sonoma Counties, extending southwest to the Pacific slope of Mt. Tamalpais in Marin County. It grows in grassy flats, spring-moist meadows, and open slopes in the chaparral belt below 2000 feet.