Plants and Animals
Amerorchis rotundifolia Small round-leaved orchis
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)
Global Rank: G5 - Secure
State Rank: S1 - Critically imperiled
|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 cold northern swamps, semi-open fens, and large peatland complexes.
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.
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.
Requires protection of habitat. This includes the maintenance of the overstory and ensuring a continuous cool groundwater supply to maintain microsite conditions.
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.
Survey Period: From first week of June to fourth week of July
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