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Etymology: Lapsana: Dioscorides used this name for "wild mustard"
Plants: erect, annual, 1/2'- 5' tall forb with milky juice; slightly reddish stems with white glandular hairs Leaves: alternate, lower leaves with a large end-lobe; set apart, 2 shallow lobes near the slightly winged, hairy stalk; upper leaves smaller, unlobed Flowers: head with 18-20 pale yellow rays with blunt, 5-toothed tips; inflorescence of several to many heads in loose clusters on bare stalks; blooms June-Sept. Fruits: smooth, curved dry seed with no fluffy pappus Habitat: shade; moist; woods, fields, disturbed sites Conservation Status: Introduced - naturalized; potentially invasive
Flora of North America: Flora of North America WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key
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© Wisconsin State Herbarium, UW-Madison
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