common nipplewort, nipplewort
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