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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 - Threatened (legally protected)
• State Rank: S2 - Imperiled
• Global Rank: G4 - Apparently secure

Occurrences

County Name	Number of Occurrences	Year Last Observed
Barry	1	1986
Chippewa	5	2007
Ingham	1	1923
Ionia	1	1880
Menominee	1	1985

Updated 05/08/2013. 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.

Natural Community Types

• Limestone cobble shore
• Alvar
• Hillside prairie
• Limestone bedrock glade

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.

Management

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

• Meander search

  Survey Period: From first week of May to fourth week of August

Page Citation

References

Survey References

• Elzinga, C.L., D.W. Salzer, and J.W. Willoughby. 1998. Measuring and Monitoring Plant Populations. The Nature Conservancy and Bureau of Land Management, Denver. BLM Technical Reference 1730-1. 477pp.

• Goff, G.F., G.A. Dawson, and J.J. Rochow. 1982. Site examination for Threatened and Endangered plant species. Environmental Management 6(4): 307-316

• Nelson, J.R. 1984. Rare Plant Field Survey Guidelines. In: J.P. Smith and R. York. Inventory of rare and endangered vascular plants of California. 3rd Ed. California Native Plant Society, Berkeley. 174pp.

• Nelson, J.R. 1986. Rare Plant Surveys: Techniques For Impact Assessment. Natural Areas Journal 5(3):18-30.

• Nelson, J.R. 1987. Rare Plant Surveys: Techniques for Impact Assessment. In: Conservation and management of rare and endangered plants. Ed. T.S. Elias. California Native Plant Society, Sacramento. 8pp.

Technical References

• Cooperrider, T.S. 1995. The Dicotyledonae of Ohio Part 2. Linaceae through Campanulaceae. Ohio State University Press, Columbus. 656pp.

• Gleason, H. A., and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second edition. The New York Botanical Garden, Bronx. 910pp.

• Gray, A. 1950. Gray's Manual of Botany; eighth ed. Van Nostrand Reinghold, New York. 1632pp.

• Holmgren, N.H. 1998. Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the vascular plants of Northeastern United States and adjacent Canada. New York Botanical Garden, Bronx. 937pp.

• Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region, 4th ed. Indiana Academy of Science, Indianapolis. 921pp.

• Voss, E.G. 1996. Michigan Flora. Part III. Dicots (Pyrolaceae-Compositae). Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 622pp.

• Waterman, A.H. 1960. The Mints (Family Labiatae) of Michigan. Michigan State University. Biological series, Vol. 1 No. 8

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