Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Nabalus altissimus
FAMILY
Asteraceae_
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Tall Rattlesnake-root at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Prenanthes altissima
FAMILY
Asteraceae_
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Nabalus altissimus
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Prenanthes altissima
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Prenanthes altissima
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-06-005:
Prenanthes altissima FAMILY Asteraceae_
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Nabalus altissimus
COMMON NAME:
Tall Rattlesnake-root, Tall White Lettuce
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_naal3_001_lvd
)
JK Marlow jkm0507n_32
July Pickens County SC
Jocassee Gorges
Basal leaves, if present, broad and triangular or palmately lobed or divided, per Newcomb's Wildflower Guide (Newcomb, 1977).
)
JK Marlow jkm160919_002
September Polk County NC
Pearson's Falls
Petioles winged; leaf blades usually ovate or triangular, often deeply 3-lobed, per Flora of North America.
)
JK Marlow jkm160919_004
September Polk County NC
Pearson's Falls
Leaf bases truncate to hastate or cordate, margins entire or shallowly dentate, per Flora of North America.
)
JK Marlow jkm191007_1731
October Greenville County SC
)
Richard and Teresa Ware rtw_prenanthes_altissimum
October
Usually 5 florets in each head, subtended by 5 smooth principal bracts, per Wildflowers of the Southern Mountains (Smith, 1998).
COMPARE
involucral bracts of Rattlesnake-root
)
JK Marlow jkm201107_08061
November Greenville County SC
Caesars Head State Park
Recognized by narrow involucres with 5 pale green, glabrous phyllaries, in combination with...
)
JK Marlow jkm201107_08068
November Greenville County SC
Caesars Head State Park
...(4)5(6) florets, and pale yellow to greenish yellow corollas, per Flora of North America.
)
JK Marlow jkm201107_8066
November Greenville County SC
Caesars Head State Park
)
JK Marlow jkm201107_8067
November Greenville County SC
Caesars Head State Park
)
JK Marlow jkm201107_8069
November Greenville County SC
Caesars Head State Park
)
JK Marlow jkm201107_8106
November Greenville County SC
Ashmore Heritage Preserve
Stems 0.3-2m tall, strict to freely branched above, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm201107_8115
November Greenville County SC
Ashmore Heritage Preserve
Cypselae subcylindric, subterete; pappi usually whitish or pale yellow, per Flora of North America.
)
JK Marlow jkm201113_8205
November Greenville County SC
Caesars Head State Park
)
JK Marlow jkm211106_4825
November Pickens County SC
Palmetto Trail
)
JK Marlow jkm211106_4828
November Pickens County SC
Palmetto Trail
)
JK Marlow jkm211106_4830
November Pickens County SC
Palmetto Trail
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Nabalus altissimus
FAMILY
Asteraceae_
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Prenanthes altissima
FAMILY
Asteraceae_
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Nabalus altissimus
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Prenanthes altissima
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Prenanthes altissima
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-06-005:
Prenanthes altissima
FAMILY
Asteraceae_
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Nabalus altissimus
1151
Forb
Perennial
Habitat: forests, per Weakley's Flora
Native to the Carolinas & Georgia
Common (rare in Coastal Plain)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
DOES THE PLANT HAVE "MILKY SAP"?
Has milky sap (latex)
LEAVES:
Simple
Alternate, reduced upward
FLOWER:
Summer/Fall
Rays: Yellowish/ Greenish-white
Disc: Absent
Inferior ovary
Ray flowers bisexual
FRUIT:
Summer/Fall
Reddish-brown
Achene
TO LEARN MORE about this plant, look it up in a good book!
- Newcomb's Wildflower Guide (Newcomb, 1977) p212
- Field Guide to the Rare Plants of Georgia (Chafin, 2007) p287
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p287
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p108
- Wildflowers of Tennessee (Carman, 2005) p318
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p368
- Wildflowers of the Southern Mountains (Smith, 1998) p173
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