Plants and Animals
Trillium nivale Snow trillium
Small forb (10 cm) of forested floodplains; leaves small (3-4 cm), oval and bluish, with distinct petioles; flowers stalked, small, white with 3 narrow petals (1 cm wide), blooming in early April.
Status and Rank
US Status: No Status/Not Listed
State Status: T - Threatened (legally protected)
Global Rank: G4 - Apparently secure
State Rank: S2 - Imperiled
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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.
Snow trillium is found in southern Lower Michigan floodplains and mesic forests, typically on the first or second levee. It also occur in moist ravines, in rich moist woods and bluffs.
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.
Beech, sugar maple, basswood, tulip poplar, white ash, bitternut hickory, wild leek, ginger, cut-leaved toothwort, dutchman's breeches, yellow trout lily, Virginia waterleaf, woodland phlox, common trillium, ginseng, goldenseal, hackberry, pawpaw, blue ash, red ash, Kentucky coffeetree, wahoo, eastern camass, false rue anemone, bluebells, and sessile trillium.
Conserve hydrology of river system and corresponding cyclical floodplain regime. Maintain healthy intact, mature floodplain forests and minimize forest fragmentation. Monitor and control invasive species, particularly garlic mustard and dame's rocket. When possible, leave large tracts of unharvested forests and allow natural processes to operate unhindered.
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.
Survey Period: From fourth week of March to fourth week of April
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- Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region, 4th ed. Indiana Academy of Science, Indianapolis. 921pp.
- Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 488pp.