Scutellaria nervosa
Skullcap

Key Characteristics

Small forb of floodplain forests; stems essential hairless, bearing sessile ovate leaves with occasionally toothed margins; tubular flowers white to pale blue, borne in leaf axils.

Status and Rank

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

Occurrences

County NameNumber of OccurrencesYear Last Observed
Hillsdale11989
Distribution map for Scutellaria nervosa

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

This species is known from a single collection in Hillsdale County in an isolated floodplain forest remnant.

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

Silver maple, Canada anemone, bitternut hickory, enchanter's nightshade, alternate-leaved dogwood, red osier dogwood, honewort, wood nettle, bloodroot, wild geranium, green briar, cork elm, American elm, hop hornbeam, red oak, and white avens.

Management

A status survey is warranted for this species in southern Lower Michigan, where there is much potential floodplain forest habitat. Where it does occur, it would likely benefit from habitat protection and maintenance of the forest canopy.

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 Mar 30, 2017]

References

Survey References

Technical References