Nabalus

Nabalus
Nabalus alatus
Scientific classification
Kingdom:	Plantae
Clade:	Embryophytes
Clade:	Tracheophytes
Clade:	Spermatophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Cichorioideae
Tribe:	Cichorieae
Subtribe:	Crepidinae
Genus:	Nabalus Cass.
Type species
Nabalus trifoliolatus Cass.

Nabalus is a genus of Asian and North American flowering plants in the tribe Cichorieae within the family Asteraceae.¹²

Nabalus is now considered the correct name for a group of plants in North America that were formerly considered to be members of Prenanthes, and were included in that genus in the Flora of North America treatment.³ Common names for the genus include "rattlesnake root" and "white lettuce." The latter reflects its close relationship to lettuce (Lactuca sativa) but having flowers that are whitish or purplish-white in some species. Many (perhaps all) of the species are monocarpic perennials, in which an individual plant may live for multiple years in a vegetative condition but then will die after flowering and fruiting.⁴

Nabalus species include:⁵⁶⁷

• Nabalus acerifolius Maxim. (1871) - Japan
• Nabalus angustilobus (C.Shih) Sennikov (2000) - Sichuan
• Nabalus faberi (Hemsl.) Sennikov (2000) - Guizhou, Sichuan
• Nabalus leptanthus (C.Shih) Sennikov (2000) - Sichuan
• Nabalus nipponicus Franch. & Sav. (1878) - Japan
• Nabalus ochroleucus Maxim. (1871) - Primorye, Jilin, Korea, Japan
• Nabalus pyramidalis (C.Shih) Sennikov (2000) - Sichuan
• Nabalus racemiformis (C.Shih) Sennikov (2000) - Hebei
• Nabalus tatarinowii (Maxim.) Nakai (1923) - China, Primorye, Korea

• Nabalus alatus Hook. (1833) - western rattlesnake root - AK BC ALB WA OR IDMT
• Nabalus albus (L.) Hook. (1833) - white rattlesnake root - SAS MAN ONT QUE United States (Great Lakes, Northeast, Appalachians)
• Nabalus altissimus (L.) Hook. (1833) - tall rattlesnake root - MAN ONT QUE NB NS United States (Northeast, Southeast, South-central)
• Nabalus asper (Michx.) Torr. & A. Gray (1843) - rough rattlesnake root - United States (Great Plains, Mississippi Valley)
• Nabalus autumnalis (Walter) Weakley (2011) - slender rattlesnake root - MS FL SC NC VA DE NJ
• Nabalus barbatus (Torr. & A.Gray) A.Heller - barbed rattlesnake root - TX OK AR LA KY TN MS AL GA
• Nabalus boottii DC. (1838) - Boott’s rattlesnake root - NY VT NH ME (possibly a synonym of Prenanthes boottii)⁸
• Nabalus crepidineus (Michx.) DC. (1838) - nodding rattlesnake root - MN IA MO AR TN KY IL IN WI MI OH WV PA NY
• Nabalus × mainensis (A.Gray) A.Heller [N. racemosus × trifoliolatus] - Maine rattlesnake root - NY QUE ME NS NB
• Nabalus racemosus (Michx.) Hook (1833) - glaucous rattlesnake root - Canada, northern United States
• Nabalus roanensis Chick. (1880) - Roan Mountain rattlesnake root - southern Appalachians (VA NC TN)
• Nabalus sagittatus (A.Gray) Rydb. (1900) - arrow-leaf rattlesnake root - BC ALB ID MT
• Nabalus serpentarius (Pursh) Hook. (1833) - lion's foot rattlesnake root - eastern United States (MS + FL to NH)
• Nabalus trifoliolatus Cass. (1825) - three-leaved rattlesnake root - eastern North America (GA to ONT + LAB)