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Ranunculus rhomboideus
Ranunculus rhomboideus Goldie
Labrador Buttercup, Prairie Buttercup
Ranunculaceae (Buttercup Family)
Synonym(s): Ranunculus ovalis
USDA Symbol: RARH
USDA Native Status: L48 (N), CAN (N)
Usually less than 1 ft. tall, the branched flowering stalk of this perennial bears three- to five-cleft leaves above a basal cluster of broader, undivided foliage. Glossy yellow, five-petaled flowers occur singly on slender stalks from the axils of upper leaves. Petals are often tinged with lavender underneath.
From the Image Gallery
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Plant Characteristics
Duration: PerennialHabit: Herb
Fruit Type: Achene
Size Notes: Up to about 10 inches tall.
Bloom Information
Bloom Color: YellowBloom Time: Apr , May , Jun
Distribution
USA: IA , IL , MA , MI , MN , MT , ND , NE , RI , SD , WICanada: SK
Native Distribution: Ont. to B.C., s. to s. MI, n. IL & NE
Native Habitat: Grasslands; rock outcrops; open woods
Growing Conditions
Light Requirement: Part ShadeSoil Description: Sandy or gravelly soils.
Conditions Comments: Colonies of this hardy buttercup have been known to persist in quack sod. Effective in rock gardens and borders.
Propagation
Description: Fresh seed planted in June emerges in August and flowers the following spring. Seeds have low germination. Division of mature plants provides another means of increase.Seed Collection: Collect in late May and Jun.
Seed Treatment: None required.
Commercially Avail: yes
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Native Seed Network - Corvallis, OR
Bibliography
Bibref 1294 - The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.Search More Titles in Bibliography
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 26 - Minnesota Wildflowers: a field guide to the flora of Minnesota (2009)
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Ranunculus rhomboideus in USDA PlantsFNA: Find Ranunculus rhomboideus in the Flora of North America (if available)
Google: Search Google for Ranunculus rhomboideus
Metadata
Record Modified: 2023-02-24Research By: TWC Staff