Lapsana communis (Common Nipplewort)
|Also known as:|
|Habitat:||part shade, shade; roadsides, waste areas|
|Bloom season:||June - September|
|Plant height:||1 to 4 feet|
|Wetland Indicator Status:||GP: FAC MW: FACU NCNE: FACU|
|MN county distribution (click map to enlarge):|
|National distribution (click map to enlarge):|
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Yellow dandelion type flower heads on long slender stalks in an airy panicle on many branching stems. Each flower is ¼ to ½ inch across and has 8 to 20 ray flowers (petals), with 5 teeth at the tip, and several styles split near the tip. Bracts are smooth and narrow.
Leaves and stem:
Leaves are 1 to 4 inches long, ¾ to 2½ inches wide, sparsely hairy especially along veins on the underside, with irregular, shallow teeth and slightly wavy edges. Lower leaves are generally egg-shaped with a pair of distinct small lobes at the base, on long, hairy, slightly winged stalks. Leaves near the flowers are smaller, sparse, less toothed, unlobed and more lance-like, with little or no leaf stalk. Stems are bristly hairy near the base, becoming smooth in the upper plant.
Notes:Nipplewort has become widely cosmopolitan throughout the Americas and Asia due to human activity. A sporadic weed of cultivated gardens and disturbed areas, it does not encroach readily into high grade habitats and is likely under reported within Minnesota.
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Photos courtesy Peter M. Dziuk, taken at a former commercial garden center in Anoka county.
Have you seen this plant in Minnesota, or have any other comments about it?