Scirpus clintonii
Clinton's bulrush
Image of Scirpus clintonii

Photo by Ryan P. O'Connor 

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Key Characteristics

Small densely clumped bulrush (30 cm) of moist sandy soils; stems slender, topped by a single orange-colored spikelet, subtended by a short, erect, tooth-like bract.

Status and Rank

  • State Status: SC - Special Concern (rare or uncertain; not legally protected)
  • State Rank: S3 - Vulnerable
  • Global Rank: G4 - Apparently secure

Occurrences

County NameNumber of OccurrencesYear Last Observed
Bay11900
Clinton21901
Crawford12004
Ingham11886
Ionia11882
Jackson11951
Kalkaska12004
Livingston11898
Macomb11847
Marquette11986
Oakland42003
Schoolcraft42004
Shiawassee11990
St. Clair11999
Washtenaw41990
Wayne21994
Distribution map for Scirpus clintonii

Updated 5/16/2016. Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.

Habitat

Clinton's bulrush is found in seasonally moist to wet sandplains in the central and eastern Upper Peninsula, and wet to wet-mesic prairies in Lower Michigan.

Natural Community Types

Methodology

For each species, lists of natural communities were derived from review of the nearly 6,500 element occurrences in the MNFI database, in addition to herbarium label data for some taxa. In most cases, at least one specimen record exists for each listed natural community. For certain taxa, especially poorly collected or extirpated species of prairie and savanna habitats, natural community lists were derived from inferences from collection sites and habitat preferences in immediately adjacent states (particularly Indiana and Illinois). Natural communities are not listed for those species documented only from altered or ruderal habitats in Michigan, especially for taxa that occur in a variety of habitats outside of the state.

Natural communities are not listed in order of frequency of occurrence, but are rather derived from the full set of natural communities, organized by Ecological Group. In many cases, the general habitat descriptions should provide greater clarity and direction to the surveyor. In future versions of the Rare Species Explorer, we hope to incorporate natural community fidelity ranks for each taxon.

Feel free to send questions and comments to Brad Slaughter at slaugh14@msu.edu.

Associated Plants

Bluejoint grass, cordgrass, rush, sedges, twig-rush, shrubby cinquefoil, swamp milkweed, big bluestem, Indian grass, Sullivant's milkweed, purple milkweed, swamp thistle, eastern prairie fringed orchid, marsh blazing star, whorled loosestrife, grass-of-Parnassus, smooth hedge nettle, swamp rose, Missouri ironweed, joe-pye weed, common bone set, and spike-rush.

Management

Protect habitat; maintain hydrology and natural disturbance regimes. This species most likely requires open conditions. Prevent woody plant encroachment by using prescribed fire or manual brush removal. Much of this habitat has been lost and degraded via conversion to agriculture, development, alterations of ground water hydrology and fire suppression.

General Survey Guidelines

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.

Survey Methods

Page Citation

Michigan Natural Features Inventory. 2007. Rare Species Explorer (Web Application). Available online at http://mnfi.anr.msu.edu/explorer [Accessed Sep 25, 2016]

References

Survey References

Technical References