Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Eupatorium altissimum
FAMILY
Asteraceae__
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Tall Thoroughwort at Vascular Plants of North Carolina.
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Eupatorium altissimum
FAMILY
Asteraceae__
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Eupatorium altissimum
INCLUDED WITHIN Flora of North America north of Mexico, vol. 21 (2006)
Eupatorium altissimum
INCLUDED WITHIN Floristic Synthesis of North America (Kartesz, 1999)
Eupatorium altissimum
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-34-009:
Eupatorium altissimum FAMILY Asteraceae__
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Eupatorium altissimum
COMMON NAME:
Tall Thoroughwort, Tall Boneset
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_eual3_001_lvd
)
Alan S. Weakley asw_795638648610706
May Granville County NC
Lvs 5-12cm x 5-20mm, glandular-punctate, densely puberulent, hairs fairly long, curling or twisted, per Weakley's Flora.
)
Richard and Teresa Ware rtw_e_altissimum_6
August
)
Terry Holdsclaw tdh_e_altissimum_0114
September Iredell County NC
)
Terry Holdsclaw tdh_e_altissimum_0120
September Iredell County NC
)
Terry Holdsclaw tdh_e_altissimum_2
September Lincoln County NC
Stout perennial from 3 to 6' tall, with a mostly hairy stem, per Wildflowers of Tennessee (Carman, 2005).
)
Terry Holdsclaw tdh_e_altissimum_2b
September Lincoln County NC
Lvs hairy, lance-elliptic, strongly 3-nerved to base, toothed above middle, per Wildflowers of Tennessee (Carman, 2005).
)
Terry Holdsclaw tdh_e_altissimum_3
September Lincoln County NC
Disc flwrs white to cream-colored. Involucral bracts rounded, overlapping, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Eupatorium altissimum
FAMILY
Asteraceae__
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Eupatorium altissimum
FAMILY
Asteraceae__
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Eupatorium altissimum
INCLUDED WITHIN
Flora of North America north of Mexico, vol. 21
Eupatorium altissimum
INCLUDED WITHIN
Floristic Synthesis of North America (Kartesz, 1999)
Eupatorium altissimum
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-34-009:
Eupatorium altissimum
FAMILY
Asteraceae__
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Eupatorium altissimum
3471
Forb
Perennial
Habitat: woodlands, old fields, woodland borders, and openings over mafic rocks (such as diabase) or calcareous rocks (such as limestone and calcareous sandstone), 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:
Simple
Opposite
Petioles obscured by decurrent blade
FLOWER:
Summer/Fall
Disc: Cream
Rays: Absent
Inferior ovary
Bisexual
Flowers in flat-topped corymbs
FRUIT:
Summer/Fall
Lustrous black
Achene
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p080
- Wildflowers of Tennessee (Carman, 2005) p294
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p342?
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".