Contains 2 accepted taxa overall.

Characteristics
Nabalus Cass.
RATTLESNAKEROOT
This genus had sometimes been included in Prenanthes, although it appears the two genera are not closely related (Kim et al. 1996; Zhang et al. 2011).
Classification
ASTERALES
Nabalus
Citation
NABALUS Cassini, in Cuvier, Dict. Sci. Nat. 34: 99. 1825.
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TYPE: Prenanthes alba Linnaeus Lectotypified by Pfeiffer, Nomencl. Bot. 2: 404. 1874.
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Nabalus autumnalis SLENDER RATTLESNAKEROOT Native FAC (NWPL)
Nabalus serpentaria CANKERWEED; LIONSFOOT Native
[Family identification key]
1.  Inflorescence racemiform or spiciform; phyllaries glabrous; corolla pinkish, lavender, to white
1.  Inflorescence paniculiform or corymbiform; phyllaries hispid to setose; corolla pale greenish white to pale yellow
Genus Synonyms
Synonym Full Citation Basionym Type
Esopon Esopon Rafinesque, Fl. Ludov. 57, 149. 1817. TYPE: Esopon glaucum Rafinesque
Harpalyce Harpalyce D. Don, Edinburgh New Philos. J. 6: 308. 1829, non Sesse y Lacasta & Mocino ex de Candolle 1825. TYPE: Non designatus.
Hylethale Hylethale Link, Handbuch 1: 788. 1829. TYPE: Hylethale purpurea (Linnaeus) Link (Prenanthes purpurea Linnaeus) = Prenanthes Linnaeus 1753, by lectotypification.
Nabalus Prenanthes Linnaeus, Sp. Pl. 797. 1753. TYPE: Prenanthes purpurea Linnaeus Lectotypified by Cassini, in Cuvier, Dict. Sci. Nat. 34: 98. 1825.
Narbalia Narbalia Rafinesque, New Fl. 4: 84. 1838 ("1836"). TYPE: Narbalia latifolia Rafinesque