Poa paludigena
Bog bluegrass
Image of Poa paludigena

Photo by Susan R. Crispin 

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Key Characteristics

Small slender grass of muck soils in swamp forests; plants lax and creeping; leaves very narrow (1-2 mm wide) inflorescence with only 2 panicle branches per node, the spikelets borne at the middle to end of the branches.

Status and Rank

  • State Status: T
  • State Rank: S2
  • Global Rank: G3

Occurrences

County NameNumber of OccurrencesYear Last Observed
Barry12008
Cass31994
Cheboygan11928
Clinton11880
Ingham11895
Ionia11880
Jackson32006
Kalamazoo61947
Lake22002
Livingston11890
Montcalm11898
Newaygo12006
Oakland12004
Ottawa11899
St. Clair11904
St. Joseph31947
Washtenaw42001
Distribution map for Poa paludigena

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

Bog bluegrass is found in swamps and wet woods. It is often found creeping along large moss-covered logs on the forest floor.

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

Silver maple, red maple, swamp white oak, cinnamon fern, royal fern, skunk cabbage, marsh-marigold, mosses, sensitive fern, black ash, American elm, white ash, red ash, tamarack, red maple, yellow birch, spicebush, and prickly ash.

Management

This species requires the maintenance of natural hydrological cycles. Where it occurs in forested environments, protection of the canopy is also likely important.

General Survey Guidelines

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement 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 Jul 22, 2017]

References

Survey References

Technical References

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