Enemion biternatum Raf.
Eastern false rue anemone, Isopyrum
Ranunculaceae (Buttercup Family)
Synonym(s): Isopyrum biternatum
USDA Symbol: enbi
Open, many-stemmed perennial, 8-16 in. hight. Loose clusters of white flowers with five petal-like sepals are borne on slender stems from leaf axils. White, anemone-like flowers in small clusters at ends of stems or on stalks rising in axils of alternate leaves. Leaves are divided into three segments and then into three leaflets. Grows in large patches.
This small, herbaceous perennial, long known as Isopyrum biternatum, grows from thick, tuberous, fibrous roots. It may be confused with Rue Anemone (Thalictrum thalictroides), which has opposite or whorled stem leaves just below the flowers, 5-10 petal-like sepals, and fruit with one seed.
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Plant CharacteristicsDuration: Perennial
Root Type: Fibrous
Size Notes: Normally 5 to 6 inches high, but can reach 20 inches.
Leaf: Yellowish green
Flower: Flowers 3/4 inch across
Fruit: Quarter inch
Size Class: 1-3 ft.
Bloom InformationBloom Color: White
Bloom Time: Mar , Apr , May
Bloom Notes: Normally blooms for a month starting in late March to early April, but sometimes starts in winter and continues blooming through early spring.
DistributionUSA: AL , AR , FL , IA , IL , IN , KS , KY , MI , MN , MO , MS , NC , NY , OH , OK , SC , SD , TN , VA , WI , WV
Native Distribution: S. Ont. to MN, s. to n.w. FL, AL, MO, & OK. Most of temperate eastern North America; Zones 5 to 8.
Native Habitat: Rich or calcereous woods & thickets; floodplain woods; limestone ledges.
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade , Shade
Soil Moisture: Moist , Wet
Soil pH: Acidic (pH<6.8)
Soil Description: Rich, moist to mesic, acid soils. Tolerates lime.
Conditions Comments: Tolerates seasonal flooding.
BenefitUse Ornamental: Provides bright white bloooms in spring shade.
Use Wildlife: Flowers attract bees.
Conspicuous Flowers: yes
Interesting Foliage: yes
Nectar Source: yes
Value to Beneficial InsectsSupports Conservation Biological Control
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationPropagation Material: Root Division , Seeds
Commercially Avail: yes
Maintenance: Most effective if planted in masses 5 to 6 feet in extent.
National Wetland Indicator Status
From the National Suppliers DirectoryAccording to the inventory provided by Associate Suppliers, this plant is available at the following locations:
American Native Nursery - Quakertown, PA
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Longwood Gardens - Newark, DE
Mt. Cuba Center - Hockessin, DE
BibliographyBibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
* The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.
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Additional resourcesUSDA: Find Enemion biternatum in USDA Plants
FNA: Find Enemion biternatum in the Flora of North America (if available)
Google: Search Google for Enemion biternatum
MetadataRecord Modified: 2013-09-09
Research By: TWC Staff