OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Eupatorium torreyanum   FAMILY Asteraceae__   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Eupatorium hyssopifolium var. laciniatum   FAMILY Asteraceae__

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Eupatorium torreyanum

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 21 (2006)

Eupatorium hyssopifolium var. laciniatum

SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)

Eupatorium hyssopifolium var. laciniatum

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-34-013?:

Eupatorium hyssopifolium   FAMILY Asteraceae__

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Eupatorium torreyanum

 

COMMON NAME:
Torrey's Thoroughwort, Torrey's Eupatorium


         To see larger pictures, click or hover over the thumbnails.

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_euto6_001_lvd

        

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

Alan S. Weakley    asw_627155369016727

May    Granville County    NC

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm210626_1648

June    Oconee County    SC

Leaves mostly opposite or in whorls of 3, conspicuously & divergently toothed, per Weakley's Flora.

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm140801_269

August    Greenville County    SC

Swamp Rabbit Trail

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm140801_272

August    Greenville County    SC

Swamp Rabbit Trail

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm170826_798

August    Spartanburg County    SC

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm140909_581

September    Greenville County    SC

Swamp Rabbit Trail

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm230901_5168

September    Greenville County    SC

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm230901_5169

September    Greenville County    SC

Flowers discoid, perfect, white, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm230916_5495

September    Greenville County    SC

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm201008_7658

October    Greenville County    SC

Leaves lance-shaped, rough, with 3 prominent veins and widely spaced teeth, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

JK Marlow    jkm201008_7659

October    Greenville County    SC

image of Eupatorium torreyanum, Torrey's Thoroughwort, Torrey's Eupatorium

Richard and Teresa Ware    rtw_eupatorium_torreyanum

October        

Leaves usually spreading or ascending (not deflexed), per Weakley's Flora.

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Eupatorium torreyanum   FAMILY Asteraceae__

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Eupatorium hyssopifolium var. laciniatum   FAMILY Asteraceae__

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Eupatorium torreyanum

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 21
Eupatorium hyssopifolium var. laciniatum

SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Eupatorium hyssopifolium var. laciniatum

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-34-013?:
Eupatorium hyssopifolium   FAMILY Asteraceae__

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Eupatorium torreyanum

 

Find by SCIENTIFIC NAME:

3635

Forb

Habitat: Dry woodlands, powerline rights-of-way, roadsides, marshes, per Weakley's Flora

Native to the Carolinas & Georgia

Common in Carolina Piedmont, rare in Mountains (uncommon elsewhere in GA-NC-SC)

map
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:
Simple
Mostly opposite or in whorls of 3
Leaves sessile

FLOWER:
Summer/Fall
Disc: White
Rays: Absent
Inferior ovary
Bisexual

FRUIT:
Summer/Fall
Lustrous black
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



 


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