New York Natural Heritage Program
Creeping Sedge
Carex chordorrhiza Ehrh. ex L. f.
Monocots

Habitat [-]
Carex chordorrhiza occurs primarily in peat lands that often are at least somewhat minerotrophic including rich, medium, and poor fens. The habitat is usually open although it does occur where there are some shrubs present and also in openings in forested wetlands (New York Natural Heritage Program 2006). Fens, bogs, floating mats on lakeshores, emergent sedge marshes, usually in very wet sites, often in shallow water (Reznicek and Catling 2002). Sphagnum bogs (Gleason and Cronquist 1991). Quagmires and inundated bogs (Fernald 1970). Found in very wet sphagnum bogs and lake-borders in calcareous districts (Mackenzie 1931-1935).

Associated Ecological Communities [-]
  • Dwarf shrub bog
    A wetland usually fed by rainwater or mineral-poor groundwater and dominated by short, evergreen shrubs and peat mosses. The surface of the peatland is usually hummocky, with shrubs more common on the hummocks and peat moss throughout. The water in the bog is usually nutrient-poor and acidic.
  • Inland poor fen
    A wetland fed by acidic water from springs and seeps. Plant remains in these fens do not decompose rapidly and thus the plants in these fens usually grow on older, undecomposed plant parts of mostly sphagnum mosses.
  • Medium fen
    A wetland fed by water from springs and seeps. These waters are slightly acidic (pH values generally range from 4.5 to 6.5) and contain some dissolved minerals. Plant remains in these fens do not decompose rapidly and thus the plants in these fens usually grow on older, undecomposed plant parts of woody material, grasses, and mosses.
  • Rich shrub fen
    A wetland with many shrubs that is usually fed by water from springs and seeps. These waters have high concentrations of minerals and high pH values, generally from 6.0 to 7.8. Plant remains in these fens do not decompose rapidly and thus the plants in these fens usually grow on older, undecomposed woody plant parts.

Associated Species [-]
  • Bog Rosemary (Andromeda polifolia)
  • American Woollyfruit Sedge (Carex lasiocarpa)
  • Mud Sedge (Carex limosa)
  • Leatherleaf (Chamaedaphne calyculata)
  • Twig Rush (Cladium mariscoides)
  • Marsh Willow-herb (Epilobium palustre)
  • Bog Buckbean (Menyanthes trifoliata)
  • Sweet Bayberry (Myrica gale)
  • Bog Willow (Salix pedicellaris)
  • Large Cranberry (Vaccinium macrocarpon)