Pseudoroegneria spicata
Bluebunch wheatgrass

Key Characteristics

Densely tufted glaucous-green perennial grass of the western Upper Peninsula; leaves very narrow (< 3 mm), involute; lemmas with awns strongly spreading.

Status and Rank

  • State Status: X
  • State Rank: SX
  • Global Rank: G5

Occurrences

County NameNumber of OccurrencesYear Last Observed
Keweenaw11895
Distribution map for Pseudoroegneria spicata

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

This species was collected only once in 1895 from rocky bluffs in Keweenaw County. Further west in the main portion of its range, it is knowns from dry prairies and open dry woods, as well as slopes, canyons, bluffs, and rocky outcrops.

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

Virtually no collection data for a single Michigan collection, where it was found on bluffs in Keweenaw Co.

Management

A western disjunct species from one collection; may very likely persist on rocky bluffs in the Keweenaw peninsula and elsewhere in the western U.P. Management should simply seek to maintain appropriate habitat. In sensitive areas, intensive recreation such as rockclimbing that may denude areas of vegetation should be limited.

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 Aug 18, 2017]

References

Survey References

Technical References

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