Photo by Susan R. Crispin
Annual forb of marshes near Isle Royale; leaves deeply divided into three narrow segments; flowers yellow with 5 small (5 mm) petals about equal to the sepals.
Status and Rank
- State Status: T - Threatened (legally protected)
- State Rank: S1 - Critically imperiled
- Global Rank: G5 - Secure
|County Name||Number of Occurrences||Year Last Observed|
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.
Macoun's buttercup is found in marshes, streamside, and muddy hollows in wet ground. In Michigan, it is known only from Isle Royale.
Natural Community Types
Water-plantain, sedges, spike-rush, northern manna grass, cut grass, smartweed, arrowhead, bur-reed, cat-tail, wild rice, water-milfoil, watercress, great duckweed, water-lily, bulrush, pickerel weed, arrow-arum, and pondweed.
To protect this species, maintain wetland hydrology and the natural cycle of fluctuations in emergent marshes.
General Survey Guidelines
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.
- Meander search
Survey Period: From first week of July to fourth week of July
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