| Fimbristylis puberula |
| Chestnut Sedge |
Key Characteristics
Small graminoid of sandy lakeplain prairies; leaves stiffly erect and linear with inrolled margins; inflorescence open and umbrella-like with several ovoid spikelets; achenes small, flattened.
Status and Rank
- State Status: X - Presumed extirpated (legally 'threatened' if rediscovered)
- State Rank: SX - Presumed extirpated
- Global Rank: G5 - Secure
Occurrences
| County Name | Number of Occurrences | Year Last Observed |
|---|---|---|
| Berrien | 1 | 1838 |
| Cass | 1 | 1838 |
| St. Clair | 1 | 1904 |
![Occurrence Map for [Sname]](https://webarchive.library.unt.edu/eot2008/20090116095759im_/http://web4.msue.msu.edu/mnfi/maptmp/NFR_Distributions12320996603140.png)
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
Flat lakeplain landscapes with depressions and other areas characterized by a fluctuating water table: including coastal plain marshes, sandy lake edges, wet swales within oak barrens and other types of intermittent wetlands. Last collected in Michigan in 1904 from Harsen's Island in the St. Clair River delta.
Natural Community Types
Associated Plants
Virtually no collection data are known for Michigan's only two collections of this species. In the Chicago region, associates include big bluestem, azure aster, heath aster, shooting star, downy gentian, yellow-eyed-grass, prairie cinquefoil, nut-rush, and blue-eyed grass.
Management
Status surveys are necessary to determine if this species still occurs in the state. If found, it would like require conservation of habitat and protection of the hydrology (maintenance of cyclical drawdown regime and water table), as well as the maintenance of moist, open habitat. Likely particularly vulnerable to ORV impacts. The use of prescribed burns to perpetuate open prairie habitat dominated by grasses and other graminoids would also probably be beneficial.
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
- Meander search
Survey Period: From third week of July to fourth week of September
More Information
See MNFI Species AbstractReferences
Survey References
- Elzinga, C.L., D.W. Salzer, and J.W. Willoughby. 1998. Measuring and Monitoring Plant Populations. The Nature Conservancy and Bureau of Land Management, Denver. BLM Technical Reference 1730-1. 477pp.
- Goff, G.F., G.A. Dawson, and J.J. Rochow. 1982. Site examination for Threatened and Endangered plant species. Environmental Management 6(4): 307-316
- Nelson, J.R. 1984. Rare Plant Field Survey Guidelines. In: J.P. Smith and R. York. Inventory of rare and endangered vascular plants of California. 3rd Ed. California Native Plant Society, Berkeley. 174pp.
- Nelson, J.R. 1986. Rare Plant Surveys: Techniques For Impact Assessment. Natural Areas Journal 5(3):18-30.
- Nelson, J.R. 1987. Rare Plant Surveys: Techniques for Impact Assessment. In: Conservation and management of rare and endangered plants. Ed. T.S. Elias. California Native Plant Society, Sacramento. 8pp.
Technical References
- Flora of North America Editorial Committee. 2002. Flora of North America, North of Mexico. Volume 23: Magnoliaphyta: Commelinidae (in part): Cyperaceae. Oxford University Press, New York. 608pp.
- Gleason, H. A., and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second edition. The New York Botanical Garden, Bronx. 910pp.
- Godfrey, R.K. and Wooten. 1981. Aquatic and Wetland Plants of Southeastern United States. Dicotyledons. University of Georgia Press, Athens. 712pp.
- Gray, A. 1950. Gray's Manual of Botany; eighth ed. Van Nostrand Reinghold, New York. 1632pp.
- Holmgren, N.H. 1998. Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the vascular plants of Northeastern United States and adjacent Canada. New York Botanical Garden, Bronx. 937pp.
- Radford, A. E., H. E. Ahles, and C. R. Bell. 1968. Manual of the vascular flora of the Carolinas. University of North Carolina Press, Chapel Hill. 1183pp.
- 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.