Phacelia franklinii
Franklin's phacelia
Image of Phacelia franklinii

Photo by Emmet J. Judziewicz 

Key Characteristics

Small forb of rocky openings on Isle Royale; stems hairy, bearing alternate, deeply pinnately-lobed leaves, terminated by a cluster of violet bell-shaped flowers.

Status and Rank

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

Occurrences

County NameNumber of OccurrencesYear Last Observed
Keweenaw81994
Distribution map for Phacelia franklinii

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

The limited habitat data for this species indicates that it grows in rocky or gravelly openings on Isle Royale. On the north side of Lake Superior in Ontario, it inhabits sand and gravel roadsides, lakeshores, and riverbanks.

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

White spruce, white birch, bearberry, soapberry, hair grass, poverty grass, harebell, wild strawberry, cow-wheat, rusty woodsia, and pale corydalis.

Management

In Michigan this species is known only on Isle Royale, where a status survey is recommended in order to compile more thorough habitat and associate data. It would primarily benefit from habitat protection and limiting recreational activities that may trample plants in occupied sites.

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 May 27, 2017]

More Information

See MNFI Species Abstract

References

Survey References

Technical References

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