New York Natural Heritage Program
Bushy St. John's-wort
Hypericum densiflorum Pursh
Dicots

Habitat [-]
The plants occur in a red maple swamp that has colonized the remains of an old pond after the dam broke (New York Natural Heritage Program 2012). Wet meadows and moist bottomlands, less often on rocky slopes (Gleason and Cronquist 1991). Swamps and wet acid soil (Fernald 1950).

Associated Ecological Communities [-]
  • Red maple-hardwood swamp
    A hardwood swamp that occurs in poorly drained depressions, usually on inorganic soils. Red maple is usually the most abundant canopy tree, but it can also be codominant with white, green, or black ash; white or slippery elm; yellow birch; and swamp white oak.

Associated Species [-]
  • Shallow Sedge (Carex lurida)
  • Tussock Sedge (Carex stricta)
  • Common Reed (Phragmites australis)