Euphrasia nemorosa
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Image of Euphrasia nemorosa

Photo by Susan R. Crispin 

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Key Characteristics

Tiny forb (5 cm) of moist shores on Isle Royale; leaves opposite and ovate with rounded teeth, rounded at base; flowers tiny (5 mm), two-lipped and white with purple lines.

Status and Rank

  • State Status: T
  • State Rank: S1
  • Global Rank: G5

Occurrences

County NameNumber of OccurrencesYear Last Observed
Keweenaw101994
Distribution map for Euphrasia nemorosa

Updated 1/31/2017. 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

Known in Michigan only from Isle Royale National Park, where it occurs locally in moist tussocks of vegetation near pools on low rock shores.

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

Bird's-eye primrose, alpine bistort, downy oat-grass, and a rare sedge (Carex atratiformis).

Management

Primarily requires protection and maintenance of natural shoreline processes. May be susceptible to excessive foot traffic and other recreational 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 Apr 24, 2017]

References

Survey References

Technical References

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