Native Plants

Plant Database

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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

26 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:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	UPL				FACU	UPL		FACU	FACU

This information is derived from: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. 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: 0000-00-00
Research By: TWC Staff

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