Plants and Animals
Panicum longifolium Panic grass
Tall tufted grass of coastal plain marshes; stems compressed with narrow leaves; most leaves basal, with inrolled margins and long hairs on the top of the blade; open panicles purple to green in color, with small spikelets (2-2.5 mm).
Status and Rank
State Status: T - Threatened (legally protected)
Global Rank: G4 - Apparently secure
State Rank: S2 - Imperiled
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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.
Long-leaved panic grass is found in seasonally flooded wetlands formed in shallow depressions and potholes in glacial lakeplain landscapes.
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.
Colic root, three-awned grass, slender fragrant goldenrod, steeplebush, Canada rush, water horehound, marsh blazing star, winged loosestrife, rattlesnake grass, gray dogwood, bluejoint grass, twig-rush, sedges, bushy aster, black-fruited spike-rush, umbrella-grass, northern clubmoss, panic grass, cross-leaved milkwort, bald-rush, tall beak-rush, tooth-cup, netted nut-rush, hyssop hedge nettle, marsh St John's-wort, pipewort, autumn sedge, and meadow beauty. The shrub margin may include red maple, black gum, pin oak, black chokecherry, dogwoods, and buttonbush.
This plant requires the conservation and protection of wetland hydrology. It may require prescribed burning to perpetuate populations and is vulnerable to ORV impacts.
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.
Survey Period: From first week of August to fourth week of September
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