Agalinis auriculata
Eared foxglove
Image of Agalinis auriculata

Photo by Brad Slaughter 

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Key Characteristics

Robust perennial forb (1 m) of mesic oak savannas; leaves stalkless, coarsely-toothed and rough, becoming reduced upward; flowers purple, borne in a terminal spike, the calyx hairy and the corolla tubular at the base with five diverging petal lobes at the throat.

Status and Rank

  • State Status: X
  • State Rank: SX
  • Global Rank: G3


County NameNumber of OccurrencesYear Last Observed
St. Joseph11837
Distribution map for Agalinis auriculata

Updated 5/15/2018. 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.


Eared false foxglove is known from a single collection in 1837, where it was found in a bur oak opening in St Joseph County. In the Chicago area, this species occurs in wet to dry prairies.

Natural Community Types


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

In the Chicago area, this species occurs with big bluestem, Sullivant's milkweed, heath aster, Canada wild-rye, flowering spurge, blazing star, downy phlox, stiff goldenrod, and Culver’s root.


The primary need for this species is status survey in southwest Michigan, where it may yet persist in remnant oak openings, oak barrens, and or related savanna communities. If found, it would likely benefit from prescribed fire and brush removal.

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 [Accessed Aug 18, 2018]


Survey References

Technical References

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