Checklist » Asteraceae » Pleiacanthus spinosus
Last updated 11/1/2020 by David Giblin.
Pleiacanthus spinosus (Nutt.) Rydb.[FNA19, HC2]
thorny skeletonweed

Publication: Fl. Rocky Mts. 1069. 1917.

Origin: Introduced

selected vouchers: WTU

Notes: Collected once (2009) in Yakima County. Uncertain as to whether a relictual native stand or an introduction. Closest populations are in central Oregon and southern Idaho.

References: (none)

Synonyms & Misapplied Names:
Lygodesmia spinosa Nutt.[HC]