Medium-sized clumped beak-rush (30-90 cm) of coastal plain marshes; leaves short, flat, and relatively wide (2-4 mm); inflorescence compact with several few-flowered spikelets; achenes transversely wrinkled.
Status and Rank
- State Status: E
- State Rank: S1
- Global Rank: G5?
|County Name||Number of Occurrences||Year Last Observed|
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.
Globe beak-rush is found in areas with a fluctuating water table such as coastal plain marshes, sandy lake edges, dune swales, seepages, sandy marshes, sandy and peaty edges of wetlands, and intermittent wetlands.
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.
Colic root, Indian grass, big bluestem, little bluestem, prairie willow, bushy aster, bluejoint grass, twig-rush, cross-leaved milkwort, sedge, switch grass; often associated with other coastal plain disjunct species such as tall beak-rush, Engelmann's spike-rush, flat-topped goldenrod, Maryland meadow beauty, panicled screwstem, short-fruited rush, tall nut-rush.
This species requires conservation of habitat and protection of the hydrology, including maintenance of cyclical drawdown regime and water table. Fire may play a role in maintaining moist, open habitat. It is also vulnerable to ORV impacts and dredging and filling activities, as well as other types of recreational impacts like horse trails.
General Survey Guidelines
- Meander search
Survey Period: From first week of July to fourth week of September
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- Mohlenbrock, R.H. 1986. Guide to the Vascular Flora of Illinois. Southern Illinois University Press, Carbondale. 507pp.
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- Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region, 4th ed. Indiana Academy of Science, Indianapolis. 921pp.
- Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 488pp.