Plants and Animals

Lycopodiella margueritae Northern prostrate clubmoss

Key Characteristics

Small clubmoss (20 cm) of moist acidic sands; stems creeping with occasional upright shoots bearing large thickened fertile strobili; leaves spreading with several marginal teeth per side.

Status and Rank

US Status: No Status/Not Listed
State Status: T - Threatened (legally protected)
Global Rank: G1G2 - Rank is uncertain, ranging from critically imperiled to imperiled
State Rank: S1S2 - Rank is uncertain, ranging from critically imperiled to imperiled


CountyNumber of OccurrencesYear Last Observed
Muskegon 1 2003
St. Clair 1 2002
Washtenaw 1 2010

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.


This clubmoss is found in seasonally flooded wetlands in shallow depressions and potholes in glacial lakeplain landscapes. Recent changes in taxonomy split a previous species into two closely related taxa and has resulted in confusion over which entity previous observations refer to. Thus, distribution maps and county lists may be particularly inaccurate for this species.

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

Bog clubmoss, northern appressed clubmoss, beak-rush, nut-rush, Indian grass, big and little bluestem, switch grass, yellow-eyed-grass, lance-leaved violet, panic grass, haircap moss, grass-leaved goldenrod, autumn sedge, mountain mint, seedbox, sundew, Canada rush, boneset, bugle weed, tooth-cup, and prairie willow.

Management Recommendations

This species requires the protection of habitat and maintenance of hydrology. It is susceptible to excessive recreational use, ORVs, and foot traffic.

Survey Methods

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.

  • Meander search

    • Survey Period: From first week of August to fourth week of October


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

  • Flora of North America Editorial Committee. 1993. Flora of North America, North of Mexico. Volume 2: Pteridophytes and Gymnosperms. Oxford University Press, New York. 475pp.