Packera indecora
Northern ragwort
Image of Packera indecora

Photo by Emmet J. Judziewicz 

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Key Characteristics

Perennial forb of rocky shores and moist thickets in the western Upper Peninsula; leaves mostly basal and oval with toothed margins, stem leaves few and strongly pinnately dissected; flowers with yellow heads, rays usually absent.

Status and Rank

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

Occurrences

County NameNumber of OccurrencesYear Last Observed
Alger11993
Delta11934
Houghton11926
Keweenaw262014
Schoolcraft11934
Distribution map for Packera indecora

Updated 7/21/2017. 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

The rayless mountain ragwort is found in a variety of habitats including moist woods of conifers, cedar swamps, rocky lake shores, and cliffs. It grows in sun to partial shade.

Specific Habitat Needs

Edge needed in Boreal forest

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.

Associated Plants

Balsam fir, quaking aspen, wild rose, showy mountain ash, speckled alder, red-osier dogwood, American yew, bluegrass, wild strawberry, flat-topped goldenrod, big leaved aster, common yarrow, and harebell.

Management

Primarily requires protection of the Lake Superior shoreline habitat and perpetuation of natural disturbance (winter ice, storms, wind) and hydrological regimes. This community occupies a stressed, potentially unstable environment; many of the species found in this community do not tolerate later stages of succession and require management that prevents woody plant encroachment. Where it occurs in wetland environments, protection of hydrology will be critical.

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 Aug 22, 2017]

More Information

See MNFI Species Abstract

References

Survey References

Technical References

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