Spotted Knapweed, Centaurea maculosa
(also called C. biebersteinii or C. stoebe)

Asteraceae or Sunflower Family

Plant Medium plant, 1 to 3 feet tall. Leaves finely divided into linear segments. Pink, purple or white flowers in thistle-like heads, outermost with very long petals, forming rays around the heads. Blooms in summer. Fruits downy, contained in brown cups which persist into the winter.

Alien weed, mostly of roadsides and waste places. Occasional along the edges of the Park and along Wildwood Drive. Also does well in the gravel parking area near the entrance.

Tyrol knapweed (C. nigrescens) has leaves that are narrow, but not divided into linear segmens, and the flowers are usually more pink to rose. Sometimes confused with common burdock, which has flowerheads of about the same size and color; however, the flowerheads of burdock are more compact and the leaves are large and undivided.

Leaves Fruits