Washington Flora Checklist

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

Checklist » Asteraceae » Chaenactis douglasii var. douglasii

Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii[FNA21, HC, HC2]

dustymaidens, hoary false yarrow

Publication: Bot. Beechey Voy. 354. 1839.

Origin: Native

Herbarium search: CPNWH

Notes: FNA21: "Most of the diploid elements of var. douglasii are distinctive and are connected by a morphologically continuous series of polyploids (usually assigned to var. achilleifolia). Some diploid forms (including var. rubricaulis and Chaenactis ramosa) appear repeatedly and discontinuously in suitable habitats. In particular, forms named var. montana seem to arise wherever the species reaches sufficient elevation. Such populations have no historic or genetic cohesion to justify their recognition as a collective taxon, even though their reduced stature may become genetically fixed in each instance. (Variety alpina, recognized below with hesitation, may be just an extreme such case.) "

Possibly not a syn, Kz99, BC & Chambers and Sundberg (2000) differ

Last updated 5/22/2020 by David Giblin.

Photo © 2004 Ben Legler
(from WTU Image Collection)

Synonyms & Misapplied Names:

Chaenactis douglasii (Hook.) H. & A var. achilleaefolia (H. & A.) A. Nels.[HC]

Chaenactis douglasii (Hook.) Hook. & Arn. var. achilleifolia (Hook. & Arn.) A. Gray

Chaenactis douglasii (Hook.) Hook. & Arn. var. glandulosa Cronquist[HC]

Chaenactis douglasii (Hook.) Hook. & Arn. var. montana M.E. Jones[HC]

Chaenactis douglasii (Hook.) Hook. & Arn. var. rubricaulis (Rydb.) Ferris

Chaenactis pedicularia Greene

Chaenactis ramosa Stockw.[HC]