Scutellaria parvula
Small skullcap
Image of Scutellaria parvula

Photo by Brad Slaughter 

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Key Characteristics

Small forb of limestone outcrops; stems with long, soft hairs, bearing sessile ovate leaves with smooth margins; tubular flowers deep blue, borne in leaf axils.

Status and Rank

  • State Status: T
  • State Rank: S2
  • Global Rank: G4


County NameNumber of OccurrencesYear Last Observed
Distribution map for Scutellaria parvula

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.


Small skullcap is found on limestone pavement in rock crevices and local depressions, primarily on Drummond Island.

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

Northern white cedar, balsam fir, sand cherry, ground juniper, buffaloberry, bulrush sedge, Hill's thistle, Alaska orchid, flattened spike-rush, prairie dropseed, and fragrant sumac.


This species primarily requires protection of habitat from direct disturbance, including ORV use and excessive foot traffic, and may also be susceptible to local alterations of the hydrological regime.

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 [Accessed Sep 24, 2018]


Survey References

Technical References

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