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Contact information
For information on Wisconsin's rare plants, contact:
Kevin Doyle
608-416-3377

Seaside Crowfoot (Ranunculus cymbalaria)

Life history

Species overview

Seaside Crowfoot (Ranunculus cymbalaria), a Wisconsin Threatened plant, is found in sandy or muddy shores and marshes, ditches and harbors along Lake Michigan, and salted roadsides near the city of Superior. Blooming occurs early June through late August; fruiting occurs late July through late August. The optimal identification period for this species is early June through late August.

Synonyms: Cyrtorrhyncha cymbalaria ssp. alpina, Halerpestes cymbalaria

Identification

  • Distinguishing characteristics: Principal leaves cordate-ovate to ovate or kidney-shaped.
  • Flower characteristics: Flowers few; petals 3 to 5 mm, scarcely surpassing the sepals; sepals usually 5 rarely more.
  • Fruit characteristics: Achenes longitudinally nerved, 1.5 to 2 mm, numerous in a short-cylindric head to 12 mm.
  • Leaf characteristics: Mostly basal; blades cordate-ovate to ovate or kidney-shaped, 5 to 25 mm, rounded above, usually cordate below; petioles 2 to 5 cm.

Phenology

  • Blooming phenology: early June through late August
  • Fruiting phenology: late July through late August
  • Optimum time to identify: early June through late August

Other

  • Growth form: Forb-prostrate
  • Vegetative reproduction: Stoloniferous
  • Life cycle: Perennial
  • Comments: Associated Species: Poa pratensis and many other exotics at the naturalized sites; at possible native sites, some calciphiles such as Lobelia kalmii.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - state and federal - and the rank (S and G Ranks) for Seaside Crowfoot (Ranunculus cymbalaria). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where this species has been found to date and is not meant as a range map.

Documented locations of Ranunculus cymbalaria in the Natural Heritage Inventory Database as of July 2015.


Summary Information
State StatusTHR
Federal Status in Wisconsinnone
State RankS2
Global RankG5
Tracked by NHIY

Habitats and landscapes

The Natural Heritage Inventory has developed scores indicating the degree to which each of Wisconsin's rare plant species is associated with a particular natural community or ecological landscape. This information is similar to that found in the Wildlife Action Plan for animals. As this is a work in progress, we welcome your suggestions and feedback.

General habitat information

  • Habitat description: Found in sandy or muddy shores and marshes, ditches and harbors along Lake Michigan, and salted roadsides near the city of Superior.
  • Soils: Wet, sometimes sandy, sometimes calcareous soils.

Natural communities

This table lists the natural communities that are associated with Seaside Crowfoot. Scores for natural community associations are: "significant" association (score=3), "moderate association" (score=2) or the species can be present but is only weakly associated with the community (score=1).

Ecological landscapes

This table lists the ecological landscape association scores for Seaside Crowfoot. The scores (3=High, 2=Moderate, 1=Low, 0=None) also correspond to the map.

Map of the Ecological Landscapes of Wisconsin.

Species guidance

The Endangered Resources Program has developed avoidance measures and management guidelines for plants on the Natural Heritage Working List. These are a work in progress, and we welcome your suggestions and feedback. Sources used in developing this information can be found here.

Avoidance measures

These are specific actions designed to avoid "take" (mortality) of this species.

  • Avoid broadcast spraying of herbicides; use care with spot spraying.
  • Avoid known individual plant locations and conduct operations elsewhere when they are least likely to cause damage. Ideally, this would involve frozen, snow-covered ground. However, in areas of the state where frozen conditions are unreliable, very dry soils late in the growing season might be the best available alternative. Consult with a biologist, if needed.

Management guidance

Management guidelines are additional considerations that may help maintain or enhance habitat for this species

  • Maintain and restore open habitat through selective clearing and brushing.
  • Avoid disturbance to shorelines and the forest-beach interface.
  • Minimize disturbance to hydrology, including soil disturbance from rutting.
  • This species is likely sensitive to water quality. Following BMPs around streams and buffering associated drainages will reduce eutrophication and prevent water quality degradation.

Photos


Seaside Crowfoot  Photo.

Photo by Thomas Meyer, Wisconsin DNR.

Seaside Crowfoot  Photo.

Photo © William S. Alverson.

Seaside Crowfoot  Photo.

Photo © June Dobberpuhl.

Seaside Crowfoot  Photo.

Photo © William S. Alverson.

Seaside Crowfoot  Photo.

Photo © Kitty Kohout.


Support for Wisconsin's rare plant information has been provided by the Division of Forestry, the Endangered Resources Fund and the Wisconsin Rare Plant Preservation Fund. To donate, visit the Natural Resources Foundation of Wisconsin [exit DNR].

Last revised: Monday, April 30, 2018
Southwest Savanna Southern Lake Michigan Coastal Western Coulees and Ridges Southeast Glacial Plains Central Sand Hills Central Lake Michigan Coastal Central Sand Plains Northern Lake Michigan Coastal Northern Lake Michigan Coastal Northeast Sands Western Prairie North Central Forest Northern Highlands Northwest Lowlands Northwest Sands Northwest Lowlands Superior Coastal Plains Forest Transition