Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Ranunculales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Thalictrum macrostylum
FAMILY
Ranunculaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Small-leaved Meadow-rue from the Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Thalictrum macrostylum
FAMILY
Ranunculaceae
SYNONYMOUS WITH Flora of North America
Thalictrum macrostylum
INCLUDING VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 076-11-007 & 008:
Thalictrum macrostylum FAMILY Ranunculaceae
INCLUDING Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)
Thalictrum subrotundum
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Thalictrum macrostylum
COMMON NAME:
Small-leaved Meadowrue, Small-flowered Meadowrue
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm060429_156
April Clay County NC
Nantahala National Forest: Tusquitee Ranger District
)
Patrick D. McMillan pdmtmacrostylum_lr1
May Pickens County SC
Table Rock State Park
)
JK Marlow jkm220617_8589
June Greenville County SC
Blackwell Heritage Preserve
)
JK Marlow jkm220617_8592
June Greenville County SC
Blackwell Heritage Preserve
Filaments clavate [club-shaped, thickened toward apex], longer than anthers, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm220617_8593
June Greenville County SC
Blackwell Heritage Preserve
Upper leaves subsessile, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm220617_8595
June Greenville County SC
Blackwell Heritage Preserve
Leaflets entire to 3-lobed, averaging about 10mm wide, the broadest usually < 20 mm wide, per Weakley's Flora (2022).
COMPARE
leaves that resemble Thalictrum
)
JK Marlow jkm220617_8598
June Greenville County SC
Blackwell Heritage Preserve
)
Samantha Tessel sam072922_9405
July Greenville County SC
Bunched Arrowhead Heritage Preserve
)
Samantha Tessel sam072922_9406
July Greenville County SC
Bunched Arrowhead Heritage Preserve
Achenes numerous, slightly stipitate; body ovoid, prominently veined, glabrous; beak 0.7-1.7mm, per Flora of North America.
)
JK Marlow jkm211116_5037
November Greenville County SC
Blackwell Heritage Preserve
)
JK Marlow jkm211116_5057
November Greenville County SC
Blackwell Heritage Preserve
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Thalictrum macrostylum
FAMILY
Ranunculaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Thalictrum macrostylum
FAMILY
Ranunculaceae
SYNONYMOUS WITH
Flora of North America
Thalictrum macrostylum
INCLUDING
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 076-11-007 & 008:
Thalictrum macrostylum
FAMILY
Ranunculaceae
INCLUDING
Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)
Thalictrum subrotundum
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Thalictrum macrostylum
2068
Forb
Perennial
Dioecious or polygamous
Habitat: Moist places, perhaps associated with circumneutral soils, moist to dry ultramafic outcrop barrens (over serpentinized olivine), tidal freshwater marshes, rarely pineland seepages with calcareous substrate, 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.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
LEAVES:
Complexly compound, with 2+ levels of pinnate and/or ternate compoundness
Mostly alternate
FLOWER:
Spring/Summer
Whitish
Unisexual and bisexual
Radially symmetrical
4(-6) sepals
Petals absent
Superior ovary
Inflorescence paniculate
FRUIT:
Spring/Summer
Aggregate of achenes
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to the Rare Plants of Georgia (Chafin, 2007) p393
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p015