Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium
 

Checklist » Asteraceae » Chaenactis douglasii var. douglasii

Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii [H&C, FNA19]
Asteraceae
dustymaidens, hoary false yarrow

Origin: Native

Voucher:WTU (view specimen records)

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

Literature:
(none)
Photo © Ben Legler
(from WTU Image Collection)

Taxon treatment authored by Peter F. Zika; last updated 12/11/2008 by David Giblin
Synonyms
Chaenactis douglasii (Hook.) H. & A var. achilleaefolia (H. & A.) A. Nels.
Chaenactis douglasii (Hook.) Hook. & Arn. var. achilleifolia (Hook. & Arn.) A. Gray
Chaenactis douglasii (Hook.) H. & A var. glandulosa Cronq.
Chaenactis douglasii (Hook.) Hook. & Arn. var. montana M.E. Jones
Chaenactis douglasii (Hook.) Hook. & Arn. var. rubricaulis (Rydberg) Ferris
Chaenactis pedicularia Greene
Chaenactis ramosa Stockwell




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