Species At Risk

Few-flowered Club-rush

(Trichophorum planifolium)

endangered provincially and nationally

Few-flowered Club-rush
Few-flowered Club-rush occurrences map


The Few-flowered Club-rush is a woodland sedge. Sedges are similar to grasses, but with a few key differences. Sedges typically have triangular, solid stems. Grasses have hollow, round stems.

The Few-flowered Club-rush flowers early in the spring before the trees grow their new leaves. The flowers are not showy and the stamens and stigmas dangle outside the flower where they are pollinated by the wind.

Action we are taking:


In Ontario, it grows at just two sites, at the Royal Botanical Gardens near Hamilton and Rouge Park in Toronto. The species is found in the eastern United States and is relatively common in the Appalachians and the Atlantic coastal plain. It ranges from Virginia and Missouri north to New York, Pennsylvania and Ohio.


This species is usually found on steep slopes of oak forests.


Little is known about the historic distribution and abundance of this sedge in Ontario. It was only recently discovered in Ontario (1955). Soil erosion may be a threat. Other threats may include trampling, browsing by deer, and competition from invasive non-native plants.


Few-flowered Club-rush is an endangered species under Ontario’s Endangered Species Act, which protects the species and its habitat.

What You Can Do to Help Few-flowered Club-rush

  • Invasive non-native plants pose a threat to the native Few-flowered Club-rush. If you live near a natural area avoid planting invasive plants such as bush honeysuckles, barberry, asiatic bittersweet, autumn olive, English ivy, goutweed, snow-on-the- mountain, and day lilies. Ask your garden centre or native plants nursery for the best native plants for your home and ponds.
  • Report any illegal activity related to plants and wildlife to 1-877-TIPS-MNR (847-7667).
  • Private land owners have a very important role to play in species at risk recovery. You may be eligible for stewardship programs that support the protection and recovery of species at risk and their habitats.
  • You can help keep track of this and other species at risk in the province by reporting your sighting to the Natural Heritage Information Centre (NHIC). The NHIC tracks and maintains a database of many of Ontario’s wild species. http://nhic.mnr.gov.on.ca/MNR/nhic/species/species_report.cfm

Did you know?

All Canadian populations of the Few- flowered Club-rush have been found near openings in the forest canopy. This suggests that once the ground is heavily shaded, this sedge cannot survive at that location.

The Endangered Species Act

Contact your local ministry office

Often the best source of local information on species at risk is your nearest ministry office. Call with your questions or concerns.