Schoenoplectiella hallii
Hall's bulrush
Image of Schoenoplectiella hallii

Photo by Gary Reese 

Key Characteristics

Very small annual bulrush (10 cm) of coastal plain marshes; culms in small clumps; spikelets appear lateral, compact; achenes black and rounded, covered by wavy horizontal ridges.

Status and Rank

  • State Status: T
  • State Rank: S2
  • Global Rank: G2G3

Occurrences

County NameNumber of OccurrencesYear Last Observed
Allegan22011
Muskegon31988
Distribution map for Schoenoplectiella hallii

Updated 7/21/2017. 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

Hall's bulrush is found in intermittent wetlands within oak barrens complexes.

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.

Associated Plants

Switch grass, dwarf burhead, switch grass, little bluestem, lance-leaved violet, prairie cordgrass, bluejoint grass, twig-rush, sedges, bushy aster, black-fruited spike-rush, umbrella-grass, northern clubmoss, panic grass, cross-leaved milkwort, bald rush, tall beak-rush, tooth-cup, netted nut-rush, hyssop hedge nettle, marsh St John's-wort, pipewort, autumn sedge, meadow beauty, red maple, black gum, pin oak, black chokecherry, dogwoods, and buttonbush.

Management

This species requires conservation of habitat and protection of the hydrology, including the maintenance of cyclical drawdown regime and water table. Maintain moist, open habitat. It may also be vulnerable to ORV impact and dredging and filling activities.

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 Nov 21, 2017]

More Information

See MNFI Species Abstract

References

Survey References

Technical References

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