Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018.
Scientific name: Prenanthes alba L.; also Nabalus albus (L.) Hook.
Common name(s): white rattlesnakeroot, white rattlesnake-root, white lettuce, lion’s-foot
Images: (to see enlargements [PC]: click on image, then right click and choose “view image”)
- simple towards the top
-flower head is 1/2 ” wide
-blooms August- September
– may be confused with P. altissima (tall rattlesnakeroot); P. alba has 8 primary bracts, P. altissima has 5. May also be confused with several other species; see NPIN Profile and Go Botany for details
Department of Botany. “ Prenanthes Alba L.” Online Virtual Flora of Wisconsin , Wisconsin State Herbarium, wisflora.herbarium.wisc.edu/taxa/index.php?taxon=4669.