| Calamagrostis lacustris |
| Northern reedgrass |
Key Characteristics
Tall perennial grass of rocky openings and shores; leaves narrow, flat, scabrous; inflorescence tightly contracted, awns of lemma twisted at base.
Status and Rank
- State Status: T - Threatened (legally protected)
- State Rank: S1 - Critically imperiled
- Global Rank: G3Q - Vulnerable. Questionable taxonomy that may reduce conservation priority
Occurrences
| County Name | Number of Occurrences | Year Last Observed |
|---|---|---|
| Houghton | 2 | 1953 |
| Iron | 1 | 2004 |
| Keweenaw | 4 | 2005 |
| Marquette | 1 | 1900 |
![County Distribution Map for [SNAME]](/tmp/Species_Distributions136913246012260.png)
Updated 05/08/2013. 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
Few habitat data are available. The few specimens that exist were noted as being collected from mossy rock crevices, rocky openings, the sandy shore of an inland lake, and a rich shrub-dominated fen.
Natural Community Types
- Sand and gravel beach
- Volcanic bedrock lakeshore
- Northern fen
- Granite bedrock glade
- Volcanic bedrock glade
Associated Plants
No data are available concerning associates in Michigan.
Management
Little is known about this species; primary conservation need at present is to validate former localities and obtain better data.
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 first week of July to fourth week of September
Page Citation
References
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
- Coffin, B. and L. Pfannmuller, eds. 1988. Minnesota's Endangered Flora and Fauna. University of Minnesota Press, Minneapolis. 473pp.
- Dore, W.G. and J. McNeill. 1980. Grasses of Ontario. Agriculture Canada Research Monographs 26: 566pp.
- 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.
- Gray, A. 1950. Gray's Manual of Botany; eighth ed. Van Nostrand Reinghold, New York. 1632pp.
- Hitchcock, A. S. 1951. Manual of the Grasses of the United States. Second ed. Revised by A. Chase. U.S. Department of Agriculture Miscellaneous Publications 200. 1051pp.
- 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.
- Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 488pp.