Cirsium arvense


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Related to Cirsium arvense: creeping thistle

Cirsium arvense

plant member of the family Asteraceae; may cause nitrate-nitrite poisoning. Called also Canada thistle.
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Since this site was converted from agricultural use to a tallgrass community, it still retained a legacy of nonnative weeds, species such as Cirsium arvense, Dipsacus fullonum, and Phalaris arundinacea.
Invasive species collected at Howell Wetlands include, Cirsium arvense L.
retroflexus, Arctium minus, Arenaria serpyllifolia, Barbarea vulgaris, Brassica nigra, Capsella bursa-pastoris, Centaurea mnaculosa, Cerastium vulgatum, Chrysanthemum leucanthemum, Cichorium intybus, Cirsium arvense, Conium maculatum, Convolvulus arvensis, Datura stramonium, Daucus carota, Dianthus armeria, Dipsacus sylvestris, Draba verna, Froelichia gracilis, Geranium pusillum, Glechoma hederacea, grasses [Bromus commutatus, Bromus inermis Bromus japonicus, Bromus racemosa, Bronus tectorum, Dactylis glomerata, Digitaria ischaemum, Eleusine indica, Elytrigia repens, Eragrostis cilianensis, Lolium perenne var.