Nabalus asper (formerly Prenanthes aspera), commonly called the rough rattlesnakeroot or rough white lettuce, is a species of plant in the family Asteraceae occurring in the eastern United States from South Dakota and Pennsylvania south to Oklahoma, Louisiana, and Alabama. This perennial plant blooms in late summer and autumn.[1] In 2010, it was reclassified from the genus Prenanthes to Nabalus.[2]

Nabalus asper
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Nabalus
Species:
N. asper
Binomial name
Nabalus asper
(Michx.) Torrey and A.Gray
Synonyms

Prenanthes aspera Michx.

Historic distribution

edit

Jason Hale collected this species sometime before 1843 in Louisiana, probably near where he lived at the time in Rapides Parish and probably in a prairie that no longer exists; his specimen is still the only known collection in Louisiana.[3]

References

edit
  1. ^ Yatskievych, G. 2006. Steyermark's Flora of Missouri. 3 Vols. The Missouri Botanical Garden Press, St. Louis, MO, USA. Vol. 2: 377-382
  2. ^ "ITIS - Report: Prenanthes aspera".
  3. ^ Holmes, W.C. and J.R. Singhurst. 2012. Nabalus aspera (Asteraceae) in Louisiana. Phytoneuron 2012-60: 1–4. ISSN 2153-733X