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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Prenanthes altissima (Tall rattlesnakeroot)
Cressler, Alan

Prenanthes altissima

Prenanthes altissima L.

Tall Rattlesnakeroot, Tall White Lettuce

Asteraceae (Aster Family)

Synonym(s): Nabalus altissimus, Prenanthes altissima var. cinnamomea

USDA Symbol: PRAL3

USDA Native Status: L48 (N), CAN (N)

Tall White Lettuce (Prenanthes altissima) has only 5 main bracts surrounding the flower heads.

 

From the Image Gallery

20 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 8 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: Aug , Sep , Oct , Nov

Distribution

USA: AL , AR , CT , DE , GA , IL , IN , KY , LA , MA , MD , ME , MI , MO , MS , NC , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WV
Canada: MB , NB , NS , ON , PE , QC

Benefit

Conspicuous Flowers: yes

National Wetland Indicator Status

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: UPL FACU UPL FACU FACU
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Prenanthes altissima in USDA Plants
FNA: Find Prenanthes altissima in the Flora of North America (if available)
Google: Search Google for Prenanthes altissima

Metadata

Record Modified: 2023-01-06
Research By: TWC Staff

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