Smallanthus uvedalia
Yellow-flowered leafcup
Image of Smallanthus uvedalia

Photo by Ryan P. O'Connor 

More Images

Key Characteristics

Large forb (up to 3 m) of forest margins; leaves opposite and palmately lobed, tapering to a winged petiole; flowers borne in small sunflower-like heads (7 cm broad) with a yellow disc and rays.

Status and Rank

  • State Status: T
  • State Rank: S1
  • Global Rank: G4G5


County NameNumber of OccurrencesYear Last Observed
Distribution map for Smallanthus uvedalia

Updated 5/15/2018. 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.


Large-flowered leafcup is known from rich woods and moist borders of swamps.

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.

Associated Plants

White oak, red oak, bitternut hickory, American elm, slippery elm, sassafras, high-bush cranberry, poison ivy, woolly blue violet, tall bellflower, Virginia creeper, riverbank grape, black snakeroot, honewort, hog peanut, joe-pye weed, ironweed, and pale coneflower.


The specific management requirements for this species are unknown. It occurs in second-growth forests and may benefit from disturbance that creates colonization sites in openings.

General Survey Guidelines

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.

Survey Methods

Page Citation

Michigan Natural Features Inventory. 2007. Rare Species Explorer (Web Application). Available online at [Accessed Sep 22, 2018]

More Information

See MNFI Species Abstract


Survey References

Technical References

Facebook link