Buttonbush
Cephalanthus occidentalis
Family: Rubiaceae

Habitat:

Bogs, swamps, streams and marshes and floodplain forests

Location relative to water:

Rooted onshore

Range:

Entire US except for northwestern states

Leaves:

  • Opposite or in whorls
  • 8-20 cm long (3-8 inches)
  • Green and glossy on top
  • Pale and fuzzy on bottom
  • Slightly wavy
  • Grooved petioles

Fruit:

  • Round head of cone-shaped, brown nutlets
  • Tipped by four teeth of persistent sepals
  • Grows June-August

Flowers:

  • Round, many-flowered heads 2-4 cm wide (1-2 inches)
  • Small, perfect, white
  • Grow on long stalks at ends of stems or from upper leaf axils
  • Four petals each, creamy white, 0.5-0.8 cm long (0.2-0.3 inches)
 
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