Checklist » Asteraceae » Ambrosia psilostachya
Last updated 7/31/2007 by David Giblin.
Ambrosia psilostachya DC.[FNA21, HC, HC2]
perennial ragweed, western ragweed

Publication: Prodr. 5: 526. 1836.

Origin: Native

selected vouchers: WTU

Notes: FNA21: "Hybrids between Ambrosia psilostachya and A. artemisiifolia have been called A. ×intergradiens W. H. Wagner."

References: (none)

Synonyms & Misapplied Names:
Ambrosia psilostachya DC. var. californica (Rydb.) S.F. Blake
Ambrosia psilostachya DC. var. coronopifolia (Torr. & A. Gray) Farw.
Ambrosia psilostachya DC. var. lindheimeriana (Scheele) Blank.
Ambrosia rugelii Rydb.