Sonchus asper  L./Hill?

Ubiquity:  Very common

Distritution:  Throughout

Plant Communities:  Many, including Ruderal

Habitats:  Dry, sunny, clayey, ultramafic or not, springs/river edges, banks or beds/waste areas/dikes; in disturbed areas like cultivated land; & most geologic formations including serpentine

Elevations:  10-2600'

Comments:  Non-native

Updated:  3/31/98

Sonchus oleraceus  L.

Ubiquity:  Very common

Distritution:  Throughout

Plant Communities:  Many including Ruderal

Habitats:  Dry, sunny river edges/banks or beds/dikes/waste areas; & in disturbed places like fields, roadsides, & cultivated soil; in most geologic formations, not including serpentine

Elevations:  10-1700'

Comments:  Non-native

Updated:  3/31/98