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Connecticut Plants
Cup Plant
Silphium perfoliatum L.
  • Family: aster (Asteraceae)
  • Habitat: moist thickets, streambanks, and moist open woods
  • Height: 4-8 feet
  • Flower size: flowerheads 2-3 inches across
  • Flower color: yellow
  • Flowering time: July to September
  • Origin: midwestern and southern US; introduced into New England
Silphium perfoliatum L.
Silphium perfoliatum L.
Silphium perfoliatum L.

Pairs of leaves are joined around the stem and form a cup that can hold rainwater.