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Nabalus Cassini. Rattlesnake-root.

Key to Nabalus

A genus of about 20 species, perennial herbs, of temperate North America and e. Asia. Molecular and morphological studies suggest that Prenanthes includes disparate components, and North American taxa are best treated in the segregate genus Nabalus (Schilling, Floden, & Schilling 2015; Kilian, Gemeinholzer, & Lack 2009; Lack in Kadereit & Jeffrey 2007; Weakley et al. 2011). The sectional treatment of Sennikov (2000) does not appear to offer a coherent and helpful division of the genus and is not followed here.

Key advice:The species cannot be reliably identified in sterile condition. The "principal phyllaries" referred to in the key are the inner, well-developed phyllaries, excluding the few smaller and poorly-developed outer phyllaries.

Ref: Bogler (2006c) In Flora of North America Editorial Committee (2006a); Cronquist (1980); Fusiak & Schilling (1984); Johnson (1980); Kadereit & Jeffrey (2007); Kilian, Gemeinholzer, & Lack (2009); Lack In Kadereit & Jeffrey (2007); Schilling, Floden, & Schilling (2015); Sennikov (2000); Shih (1987); Weakley et al. (2011). Show full citations.

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image of plant© Alan M. Cressler | Nabalus altissimus | Original Image ⭷
image of plant© Alan M. Cressler | Nabalus barbatus | Original Image ⭷
image of plant© Gary P. Fleming | Nabalus autumnalis | Original Image ⭷


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