Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Ranunculales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (2/10/25):
Isopyrum biternatum
FAMILY
Ranunculaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about False Rue-anemone from the Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Enemion biternatum
FAMILY
Ranunculaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Enemion biternatum
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 3 (1997)
Enemion biternatum
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 076-07-001:
Isopyrum biternatum FAMILY Ranunculaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Isopyrum biternatum
COMMON NAME:
False Rue-anemone, Isopyrum
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_isbi2_001_lvd
)
Keith Bradley kab_e_biternatum_3784
February McCormick County SC
Stevens Creek Heritage Preserve
)
Keith Bradley kab_e_biternatum_3895
February McCormick County SC
Stevens Creek Heritage Preserve
)
Jerry Bright jeb_031508_023
March McCormick County SC
Stevens Creek Heritage Preserve
Enemion biternatum has 5 petaloid sepals, whereas Thalictrum thalictroides has 5-10, per Weakley's Flora (2022).
COMPARE
Rue-anemone and False Rue-anemone
)
JK Marlow jkm120326_006
March McCormick County SC
Stevens Creek Heritage Preserve
)
JK Marlow jkm120326_994
March McCormick County SC
Stevens Creek Heritage Preserve
)
Richard and Teresa Ware rtw_enemion_biternatum_5
March
)
Richard and Teresa Ware rtw_enemion_biternatum_6
March
)
JK Marlow jkm070407_105
April McCormick County SC
Stevens Creek Heritage Preserve
)
JK Marlow jkm110416_821
April Etowah County AL
Its leaflets are more deeply lobed than those of Thalictrum thalictroides, per Wildflowers of the Southern Mountains (Smith, 1998).
)
JK Marlow jkm110416_832
April Etowah County AL
Its multi-tiered leaves distinguish it from Thalictrum thalictroides, per Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001).
)
JK Marlow jkm180408_241
April McCormick County SC
Stevens Creek Heritage Preserve
Fruit is a cluster of four pod-like follicles, per Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001).
COMPARE
fruits that are an aggregate of follicles
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (2/10/25):
Isopyrum biternatum
FAMILY
Ranunculaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Enemion biternatum
FAMILY
Ranunculaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Enemion biternatum
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 3
Enemion biternatum
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 076-07-001:
Isopyrum biternatum
FAMILY
Ranunculaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Isopyrum biternatum
766
Forb
Perennial
Habitat: Rich forests, either on natural levees with very nutrient rich sediments or on slopes with underlying mafic or calcareous rocks, per Weakley's Flora
Native to the Carolinas & Georgia
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Complexly compound, with 2+ levels of pinnate and/or ternate compoundness
Basal & alternate
FLOWER:
Winter/Spring
White
5 sepals
Petals absent
Superior ovary
FRUIT:
Spring
Aggregate of follicles
TO LEARN MORE about this plant, look it up in a good book!
- Gardening with Native Plants of the South (Wasowski & Wasowski, 1994, 2020) p133
- Gardening with the Native Plants of Tennessee (Hunter, 2002) p125
- Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001) p178
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p212
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p132
- Newcomb's Wildflower Guide (Newcomb, 1977) p234
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p156
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p015
- Wildflowers of Tennessee (Carman, 2005) p038
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p059
- Wildflowers of the Southern Mountains (Smith, 1998) p047
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