LRP - Licenses

LRP - Regulations

LRP - Permits

Recreation - Statewide

Recreation - Trapping

Recreation - Fishing

Recreation - Hunting

Env. Protection - Management

Env. Protection - Emergency

Env. Protection - Resources

To sign up for updates or to access your subscriber preferences, please enter your contact information below.



 
Share your observations

Share your observations of plants or non-game animals with the Natural Heritage Inventory.

Rare animals
Find rare and non-game animals.
Rare plants
Learn about plants on the Natural Heritage Working List.
Rare lichens
Discover Wisconsin's lichens.
Natural communities
Explore Wisconsin's natural communities.
Other features
Discover unique resources.
Eagle license plate

Help care for rare plants and animals by ordering an Endangered Resources plate.

Contact information
For information on Wisconsin's rare plants, contact:
Kevin Doyle
608-416-3377

Torrey's Bulrush (Schoenoplectus torreyi)

Life history

Species overview

Torrey's Bulrush (Schoenoplectus torreyi), a Wisconsin Special Concern plant, is found on the sandy shores of shallow lakes and lagoons. Blooming occurs late June through late July; fruiting occurs throughout August. The optimal identification period for this species is early July through late August.

Synonyms: Schoenoplectus torreyi

Identification

  • Distinguishing characteristics: Leaves elongate, more than half as long as the culms; style trifid.
  • Flower characteristics: Spikes 1 to 4 in a head, light brown, ovoid 8 to 15 mm; style 3-parted.
  • Fruit characteristics: Achene compressed, three-angled, obovoid, 3.2 to 4 mm including the prominent apiculus.
  • Leaf characteristics: Several, elongate, often surpassing the culm.

Phenology

  • Blooming phenology: late June through late July
  • Fruiting phenology: throughout August
  • Optimum time to identify: early July through late August

Other

  • Growth form: Graminoid
  • Vegetative reproduction: Rhizomatous
  • Life cycle: Perennial
  • Comments: Associated Species: Dulicheum arundinaceum, Eriocaulon septangulare, Phragmites australis, Ranunculus reptans, Juncus balticus, Eleocharis smallii, Bidens cernua, Polygonum hydropiper, Scirpus pungens, S. acutus, Sagittaria latifolia.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - state and federal - and the rank (S and G Ranks) for Torrey's Bulrush (Schoenoplectus torreyi). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where this species has been found to date and is not meant as a range map.

Documented locations of Schoenoplectus torreyi in the Natural Heritage Inventory Database as of July 2015.


Summary Information
State StatusSC
Federal Status in Wisconsinnone
State RankS2
Global RankG5?
Tracked by NHIY

Habitats and landscapes

The Natural Heritage Inventory has developed scores indicating the degree to which each of Wisconsin's rare plant species is associated with a particular natural community or ecological landscape. This information is similar to that found in the Wildlife Action Plan for animals. As this is a work in progress, we welcome your suggestions and feedback.

General habitat information

  • Habitat description: Found on the sandy shores of shallow lakes and lagoons.
  • Soils: Wet, sandy soils.

Natural communities

This table lists the natural communities that are associated with Torrey's Bulrush. Scores for natural community associations are: "significant" association (score=3), "moderate association" (score=2) or the species can be present but is only weakly associated with the community (score=1).

Ecological landscapes

This table lists the ecological landscape association scores for Torrey's Bulrush. The scores (3=High, 2=Moderate, 1=Low, 0=None) also correspond to the map.

Map of the Ecological Landscapes of Wisconsin.

Species guidance

The Endangered Resources Program has developed avoidance measures and management guidelines for plants on the Natural Heritage Working List. These are a work in progress, and we welcome your suggestions and feedback. Sources used in developing this information can be found here.

Avoidance measures

These are specific actions designed to avoid "take" (mortality) of this species.

  • No avoidance measures have been developed for this species.

Management guidance

Management guidelines are additional considerations that may help maintain or enhance habitat for this species

  • No guidance has been developed for this species.

Photos


Torrey's Bulrush  Photo.

Photo ©  USDA-NRCS.


Support for Wisconsin's rare plant information has been provided by the Division of Forestry, the Endangered Resources Fund and the Wisconsin Rare Plant Preservation Fund. To donate, visit the Natural Resources Foundation of Wisconsin [exit DNR].

Last revised: Monday, April 30, 2018
Southwest Savanna Southern Lake Michigan Coastal Western Coulees and Ridges Southeast Glacial Plains Central Sand Hills Central Lake Michigan Coastal Central Sand Plains Northern Lake Michigan Coastal Northern Lake Michigan Coastal Northeast Sands Western Prairie North Central Forest Northern Highlands Northwest Lowlands Northwest Sands Northwest Lowlands Superior Coastal Plains Forest Transition