Xanthium spinosum  L.

Ubiquity:  Common

Distritution:  W 1/2 & N 1/4; probably SE 1/4

Plant Communities:  Many, including Ruderal

Habitats:  Dry, sunny, weedy waste areas; in disturbed places like cultivated land

Elevations:  10-2000'

Comments:  Native, noxious weed

Updated:  12/8/97

Xanthium strumarium  L.

Ubiquity:  Very common

Distritution:  Throughout

Plant Communities:  Many, including Ruderal

Habitats:  Moist, sunny, clayey or gravelly beds of vernal pools/swales/river edges/ or banks/ or beds/creekbeds/lakesides/valley floors/dikes/ & ditches; in disturbed places like roadsides & cultivated land

Elevations:  10-2250'

Comments:  Native.  = Xanthium strumarium vars. canadense & glabratum

Updated:  12/8/97