Plants and Animals
Scirpus georgianus Georgia bulrush
Perennial wetland bulrush sedge of the Lower Peninsula that occurs in small clumps or solitary; rhizomes short, not creeping; stem obtusely 3-angled; leaf sheath all green; leaves 6 to 10 per stem and keeled; scales with green, narrow midrib; styles 3-cleft; perianth bristles, which are the most distinguishing characteristics from other Scirpus spp., mostly straight, numbering less than 4 and much shorter than achenes.
Status and Rank
US Status: No Status/Not Listed
State Status: SC - Special Concern (rare or uncertain; not legally protected)
Global Rank: G5 - Secure
State Rank: SNR - Not ranked
|County||Number of Occurrences||Year Last Observed|
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.
Found in shorelines, open marsh, and wet meadow. Found in wet, sandy to clay soil, usually in full sun. In other parts of its range it has been found in open swales of oak forests and eroded clayey slopes.
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.
Red maple (Acer rubrum), Iris (Iris sp.), black-eyed Susan (Rudbeckia hirta), goldenrod (Solidago sp.), and ironweed (Vernonia sp.).
Recently segregated from the widespread Scirpus atrovirens, this species may be overlooked and therefore warrants a status survey in the Lower Peninsula. Protect habitat and maintain wetland hydrology and natural cycle of fluctuations. Periodic natural drawdowns due to low water levels may replenish seed bank. Agricultural run-off has negative impacts. Nutrient pollution should be minimized. Control invasive species, particularly Phragmites.
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.
Survey Period: From first week of June to third week of September
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