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Connecticut Plants
Greater Celandine
Chelidonium majus L.

Greater celandine is sometimes confused with wood poppy (Stylophorum diphyllum), a wildflower native to southeastern U.S. It doesn't help that both plants sometimes go under the common name "celandine poppy." The two plants have similar-looking leaves and flowers, though the flowers of wood poppy are much larger (1 to 2 inches wide). Another way to distinguish them is the seed capsules. Greater celandine capsules are slender and smooth (see the first photo), whereas wood poppy capsules are football-shaped and covered with soft bristles.

  • Family: poppy (Papaveraceae)
  • Habitat: damp roadsides and waste places
  • Height: 1-2 feet
  • Flower size: 1/2 to 3/4 inch
  • Flower color: yellow
  • Flowering time: May to August
  • Origin: Europe
Chelidonium majus L.

A flower and developing seed capsules. Photographed in mid-July in Philadelphia, Pennsylvania.

Chelidonium majus L.

Celandine growing in an old stone wall in Philadelpia, Pennsylvania. Photographed in mid-July.

Chelidonium majus L.

Photographed in Sussex County, New Jersey in mid-July.