New York Natural Heritage Program
Clustered Bluets
Oldenlandia uniflora L.

Habitat [-]
In New York almost all of the plants grow on coastal plain pondshores among other species of wildflowers. The ponds can be surrounded by pitch pine forest or oak woods. One population was found in wet spots of oak woods along a sandy road down that leads down to a saltmarsh (New York Natural Heritage Program 2012).

Associated Ecological Communities [-]
  • Coastal plain pond shore
    The gently sloping shore of a coastal plain pond with seasonally and annually fluctuating water levels. Plants growing on the pond shore vary with water levels. In dry years when water levels are low there is often a dense growth of annual sedges, grasses, and herbs. Submerged and floating-leaved aquatic plants, such as fragrant waterlily and pondweeds, may become "stranded" on the exposed shore. In wet years when the water level is high only a few emergents and floating-leaved aquatics may be noticeable. The vegetation of this pond shore community can change dramatically from one year to the next depending on fluctuations in groundwater levels.

Associated Species [-]
  • Nodding Beggar-ticks (Bidens cernua)
  • Toothed Sedge (Cyperus dentatus)
  • Spoon-leaved Sundew (Drosera intermedia)
  • (Eleocharis flavescens var. olivacea)
  • Slender Flattop Goldenrod (Euthamia caroliniana)
  • Slender Fimbry (Fimbristylis autumnalis)
  • Golden Hedge-hyssop (Gratiola aurea)
  • Canadian St. John's-wort (Hypericum canadense)
  • Canada Rush (Juncus canadensis)
  • Dwarf Bulrush (Lipocarpha micrantha)
  • Bushy Seedbox (Ludwigia alternifolia)
  • Switchgrass (Panicum virgatum)
  • Brownish Beakrush (Rhynchospora capitellata)
  • Bald-rush (Rhynchospora nitens)
  • Long-beaked Baldrush (Rhynchospora scirpoides)
  • Eastern Poison Ivy (Toxicodendron radicans)
  • Bog White Violet (Viola lanceolata)