Taxon  Report   8003 
Tonestus peirsonii  (Keck) G. Nesom & R. Morgan
Peirson's haplopappus,  Peirson's serpentweed

Tonestus peirsonii
© 1992 Dean Wm. Taylor
Tonestus peirsonii, a dicot, is a perennial herb that is native to California and is endemic (limited) to California.
It is included in the CNPS Inventory of Rare and Endangered Plants on list 4.3 (limited distribution).   7th Edition  /  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
© 2012 Steve Matson
Genus: Tonestus
Subalpine Forest, Alpine Fell-fields
Habitat: ridges [CNPS Inventory]
Distribution by County 

Add an Observation of  Tonestus peirsonii

Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Haplopappus eximius ssp. peirsonii
TJM2: Lorandersonia peirsonii
CNPS + PLANTS: Haplopappus peirsonii
 More information about  Tonestus peirsonii
Location Suitability

Nursery / seed vendor availability from CNPLX
Commercial availability unknown.


Photos on CalPhotos / Google Images

website references on Google

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation. on the
International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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]. 2015. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Dec 01, 2015).

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

News About Calflora Home
Calflora  -  1700 Shattuck Avenue   #198,   Berkeley, CA   94709  -  510 883-3148  -  CONTACT