Ubiquity: Very commonDistritution: Throughout
Plant Communities: Many, including Ruderal
Habitats: Dry, sunny, rocky or not, ultramafic or not, grassy slopes/summits/streambeds/dikes; in cultivated places like fields; in most geologic formations including serpentine
Elevations: 10-2700'
Comments: Toxic to livestockUpdated: 2/3/98