Asteraceae

Peirson's serpentweed

Toiyabea peirsonii (D.D.Keck) G.L.Nesom

Family: Asteraceae
Genus: Toiyabea

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Peirson's serpentweed: Inyo tonestus (Tonestus peirsonii) perennial clump flowering in a rock crevice. This is a local plant endemic to the mountains of Inyo and Fresno counties of Ca — Photo: Dcrjsr, CC BY 4.0, from Wikimedia Commons

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Common names

By language (1)

English: Peirson's serpentweed

Synonyms

Haplopappus eximius subsp. peirsonii D.D.Keck
Haplopappus peirsonii (D.D.Keck) J.T.Howell
Lorandersonia peirsonii (D.D.Keck) Urbatsch, R.P.Roberts & Neubig
Tonestus peirsonii (D.D.Keck) G.L.Nesom & D.R.Morgan

Photos

Photo: Dcrjsr, CC BY 4.0, from Wikimedia Commons
Photo: Dcrjsr, CC BY 4.0, from Wikimedia Commons
Photo: Dcrjsr, CC BY 4.0, from Wikimedia Commons
Photo: Dcrjsr, CC BY 4.0, from Wikimedia Commons
Photo: Dcrjsr, CC BY 4.0, from Wikimedia Commons

More in Toiyabea

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.