Packera macounii

From Puget Prairie Plants
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  • Latin Name: Packera macounii
  • Family: Asteraceae
  • Common name: Puget butterweed, long rayed groundsel, Macoun's groundsel, Siskiyou Mountain ragwort
  • Synonyms/Misapplications: Senecio macounii, Senecio ligulifolius
  • Codon: PACMAC


Packera macounii
Scientific classification
Kingdom: Plantae
Subkingdom: Tracheobionta
Phylum: Spermatophyta
Subphylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteranae
Order: Asterales
Family: Asteraceae
Genus: Packera Á. Löve & D. Löve
Species: Packera macounii (Greene) W.A. Weber & Á. Löve


Perennial herb, rising from fibrous roots or horizontal rhizomes, variable hairiness from nearly glabrous to wooly-hairy.

Basal leaves thick, lanceolate stalked, 4-27 cm long including the stalk, sparcely white-woolly when young becoming hairless by flowering time, variable margins- from entire to coarsely toothed. Cauline leaves similar, from lanceolate to linear, reduced upwards, becoming sessile up the stalk. Tomentum more dense on lower leaf surfaces.







Photo Gallery


External Links

Siskiyou Mountain ragwort USDA Plants Database page

Integrated Taxonomic Information System

Jepson Manual Treatment