Washington Flora Checklist

A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium, Burke Museum

Checklist » Asteraceae » Senecio triangularis

Senecio triangularis Hook.[FNA20, HC, HC2]

arrowleaf groundsel, arrowleaf ragwort

Publication: Fl. Bor.-Amer. 1: 332, plate 115. 1834.

Origin: Native

Herbarium search: CPNWH

Notes: FNA20: "Plants of Senecio triangularis with narrow, subentire leaves that taper to the petioles are occasionally encountered in acid bogs in Oregon and Washington and less frequently elsewhere. They are regarded as edaphic variants; they have been recognized as var. angustifolius."

Var. angustifolius of southern OR & CA is distinct (Chambers and Sundberg, 2000).

Infraspecies:

var. triangularis [HC, HC2]

arrowleaf groundsel, arrowleaf ragwort

Last updated 11/16/2020 by David Giblin.

Synonyms & Misapplied Names:

Senecio triangularis Hook. var. angustifolius G.N. Jones[HC]