| Amerorchis rotundifolia |
| Small round-leaved orchis |
Key Characteristics
Small circumboreal orchid (10-25 cm) of cedar swamps bearing a single oval, basal leaf; flowers pale pink to white on a single tall stalk, with lower lip spotted with dark purple.
Status and Rank
- State Status: E - Endangered (legally protected)
- State Rank: S1 - Critically imperiled
- Global Rank: G5 - Secure
Occurrences
| County Name | Number of Occurrences | Year Last Observed |
|---|---|---|
| Alger | 1 | 2007 |
| Chippewa | 1 | 1986 |
| Delta | 1 | 2007 |
| Dickinson | 1 | 1883 |
| Emmet | 2 | 1981 |
| Keweenaw | 2 | 1981 |
| Marquette | 1 | 1891 |
| Menominee | 1 | 1968 |
| Oscoda | 1 | 1990 |
![Occurrence Map for [Sname]](/mnfi/maptmp/NFR_Distributions12590203034064.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.
Natural Community Types
Associated Plants
Sphagnum moss, sedges, leatherleaf, bog rosemary, wild calla, round leaved sundew, cotton grass, swamp-laurel, large cranberry, small cranberry, three-leaved false Solomon's seal, yellow lady's slipper, showy lady's slipper, Labrador tea, heart-leaved twayblade, and blunt-leaf orchid, marsh fern, pitcher-plant, bog birch, northern white cedar, black spruce, and balsam fir.
Management
Requires protection of habitat. This includes the maintenance of the overstory and ensuring a continuous cool groundwater supply to maintain microsite conditions.
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 June to fourth week of July
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
- Argus, G.W. and K.M. Pryer. 1990. Rare vascular plants in Canada: our natural heritage. Canadian Museum of Nature, Ottawa, Canada. 191pp.
- Case, F.W., Jr. 1987. Orchids of the Western Great Lakes Region. Revised ed. Cranbrook Institute of Science, Bull. 48. 251pp.
- Flora of North America Editorial Committee. 2002. Flora of North America, North of Mexico. Volume 26: Magnoliaphyta: Liliidae: Liliales and Orchidales. Oxford University Press, New York. 723pp.
- 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.
- 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.
- Hulton, E. 1968. Flora of Alaska and neighboring territories. Stanford University Press, Palo Alto. 1008 pp.
- Luer, C.A. 1975. The Native Orchids of the United States and Canada, Excluding Florida. Native Orchids U.S. & Canada. Barrons Educational Series, Hauppauge.
- Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 488pp.
- Whiting, R.E. and P.M. Catling. 1986. Orchids of Ontario. The CanaColl Foundation, Ottawa. 169pp.