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Enemion biternatum Raf.
Eastern false rue anemone, Isopyrum
Synonym(s): Isopyrum biternatum
USDA Symbol: ENBI
USDA Native Status: L48 (N), CAN (N)
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.
Plant CharacteristicsDuration: Perennial Habit: Herb 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
Quarter inch Size Class:
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.
, WV Canada: ON 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
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
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:
American Native Nursery
- Quakertown, PA
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
- Newark, DEMt. Cuba Center
- Hockessin, DE
Record Last Modified: 2013-09-09
Research By: TWC Staff