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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Astereae
Subtribus: Machaerantherinae
Genus: Pyrrocoma
Species: P. apargioides – P. carthamoides – P. clementis – P. crocea – P. hirta – P. insecticruris – P. integrifolia – P. lanceolata – P. liatriformis – P. lucida – P. racemosa – P. radiata – P. uniflora

Pyrrocoma Hook., Fl. Bor.-Amer. (Hooker) 1(6): 306. (1833)

Type species: Pyrrocoma carthamoides Hook., Fl. Bor.-Amer. (Hooker) 1(6): 307 (1833)


Haplopappus sect. Pyrrocoma (Hook.) H.M.Hall

Pyrrocoma apargioides

Pyrrocoma apargioides


Hooker, W.J. 1833. Flora Boreali-Americana (Hooker) 1(6): 306–307, pl. 107.


International Plant Names Index. 2017. Pyrrocoma. Published online. Accessed: Dec. 17 2017.
Govaerts, R. et al. 2017. Pyrrocoma in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2017 Dec. 17. Reference page. 2017. Pyrrocoma. Missouri Botanical Garden. Published online. Accessed: 17 Dec. 2017.
Hassler, M. 2017. Pyrrocoma. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2017. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2017 Dec 17. Reference page.

Vernacular names
English: Goldenweeds

Pyrrocoma is a genus of North American plants in the family Asteraceae.[2][3][4] These wildflowers are sometimes known as goldenweeds.

The species of Pyrrocoma were previously considered members of genus Haplopappus but were separated out into their own genus. Pyrrocoma are perennial plants with reddish stems and yellow daisy-like flowers. They are native to western North America.[5]


Pyrrocoma apargioides - alpineflames - CA NV UT
Pyrrocoma carthamoides - largeflower goldenweed - British Columbia, WA OR CA NV UT ID MT WY
Pyrrocoma clementis - tranquil goldenweed - CO WYUT
Pyrrocoma crocea - curlyhead goldenweed - AZ NM CO WY UT
Pyrrocoma hirta - tacky goldenweed - WA OR CA NV UT ID
Pyrrocoma insecticruris - ID
Pyrrocoma integrifolia - ID MT WY
Pyrrocoma lanceolata - lanceleaf goldenweed - British Columbia, Alberta, Saskatchewan, Manitoba, ND MT ID WY CO UT ID OR NV CA TX
Pyrrocoma liatriformis - Palouse goldenweed - WA ID OR
Pyrrocoma linearis - OR ID NV
Pyrrocoma lucida - sticky goldenweed - CA
Pyrrocoma racemosa - clustered goldenweed - CA OR NV UT ID
Pyrrocoma radiata - OR ID
Pyrrocoma rigida - OR ID WA
Pyrrocoma uniflora - plantain goldenweed - Alberta, Saskatchewan, MT ID WY CO UT OR CA


Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-12-03 at
Hooker, William Jackson. 1833. Flora Boreali-Americana 1(6): 306–307 descriptions in Latin, commentary and habitat information in English
Hooker, William Jackson. 1833. Flora Boreali-Americana 1(6): Plate CVII (107) line drawing of Pyrrocoma carthamoides
Tropicos, Pyrrocoma Hook.
Flora of North America, Vol. 20 Page 413 Goldenweed, Pyrrocoma Hooker, Fl. Bor.-Amer. 1: 306, plate 107. 1833.
Biota of North America Program 2013 county distribution maps

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