Calflora
Taxon  Report   8003 
Tonestus peirsonii  (D. D. Keck) G. L. Nesom & D. R. Morgan
Peirson's haplopappus,  Peirson's serpentweed
Tonestus peirsonii
© 2012 Steve Matson
More photos from
CalPhotos / Calflora
Tonestus peirsonii, a dicot, is a perennial herb that is native to California, is endemic (limited) to California.
also called Haplopappus peirsonii
CNPS Rare Plant Rank: 4.3 (limited distribution).   8th Edition

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Tonestus peirsonii
© 1992 Dean Wm. Taylor
Family: ASTERACEAE  
Genus: Tonestus
Communities:
Subalpine Forest, Alpine Fell-fields
Habitat: ridges
Name Status:
Accepted by JEF + CNPS + PLANTS + JM93
Alternate Names:
(according to)

ICPN + PLANTS: Haplopappus eximius ssp. peirsonii
ICPN: Lorandersonia peirsonii
CNPS + PLANTS: Haplopappus peirsonii
More information about  Tonestus peirsonii
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (TOPE)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google


Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Sep 24, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.