Photo by Susan R. Crispin
Circumboreal forb (20-50 cm) of the central and western Upper Peninsula; leaves linear, rounded at base, arising from bulb smelling strongly like onion; flowers in erect umbels, pedicels equal to or shorter than florets.
Status and Rank
- State Status: T
- State Rank: S2
- Global Rank: G5
|County Name||Number of Occurrences||Year Last Observed|
Updated 1/31/2017. 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 alvar grasslands, such as those along the Escanaba River and also in cool, moist bedrock crevices on the Lake Superior shore.
Natural Community Types
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.
Little bluestem, prairie dropseed, cat's foot, Canadian milk vetch, harebell, sedges, Indian paintbrush, field chickweed, bastard toad flax, hair grass, prairie smoke, ground juniper, bee-balm, shrubby cinquefoil, old field goldenrod, Kalm's lobelia, New England violet, bulrush sedges, meadow rue, grass-leaved goldenrod, butterwort, shrubby St John's-wort, beak-rush, ticklegrass, yarrow, bearberry, marsh bellflower, pale Indian paintbrush, spike-rush, butterwort, ninebark, silverweed, dwarf Canadian primrose, wild rose, bird's-eye primrose, and three-tooth cinquefoil.
Requires protection of the habitat and perpetuation of natural disturbance (i.e. prescribed fire, wind throw, etc.) and hydrological regimes. Since alvar is primarily a sedge and grass dominated community, species found in this community usually do not tolerate later stages of succession and require management that prevents woody plant encroachment, such as prescribed burns or brush removal. This species is susceptible to damage from excessive recreational use and foot traffic.
General Survey Guidelines
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.
- Meander search
Survey Period: From first week of July to fourth week of August
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