Hedysarum alpinum
Alpine sainfoin
Image of Hedysarum alpinum

Photo by Susan R. Crispin 

Key Characteristics

Small forb (70 cm) of calcareous rocky shores; plant bushy, with spreading shoots; leaves pinnately compound with stipules that encircle the stem; flowers deep magenta to purple; fruit transversely segmented.

Status and Rank

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

Occurrences

County NameNumber of OccurrencesYear Last Observed
Delta11985
Distribution map for Hedysarum alpinum

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

A boreal species known from a single Michigan site along the Escanaba River alvars. It was found in partial shade in an alvar-like meadow, and could also occur on gravelly or cobbly lakeshores.

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

Grass-of-Parnassus, false asphodel, butterwort, bulrush sedge, little bluestem, prairie dropseed, cat's foot, Canadian milk vetch, harebell, sedges, Indian paintbrush, field chickweed, bastard toad flax, grass, hair grass, prairie smoke, ground juniper, bee-balm, shrubby cinquefoil, and old field goldenrod.

Management

Maintain alvar habitat, prevent excessive foot traffic, and conserve river's hydrological cycles.

General Survey Guidelines

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment 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 Dec 15, 2017]

References

Survey References

Technical References

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