CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record caulanthus_simulans - Wed, Dec. 8, 2021, 23:54 ET b
Caulanthus simulans
common namePayson's jewelflower
CalPhotos image
more photos
© 2003 Charles E. Jones  Follow image link for photo data.
life formannual herb
CA Rare Plant Rank
List 4.2
LIST 4: Limited distribution (Watch List).
     0.2: Fairly endangered in California
state rank
S4      ranking system key
global rank
G4     G4: apparently secure, but some concern
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Counties, states, regions:
Riverside (RIV), San Diego (SDG)
  • Pending additional quad-level data, only county data are being provided for List 4 plants.
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Coastal scrub (CoScr)/sandy, granitic
blooming period (Feb),Mar-May(Jun),   Months in parentheses are uncommon.
elevation range90 - 2200 meters
Confused with C. heterophyllus var. pseudosimulans (unpublished), which is more coastal. Some populations threatened by proposed reservoir construction, but many populations occur on public lands (Anza Borrego SP, BLM, and USFS). Also threatened by urbanization, invasive species, grazing, and road construction.
full nameCaulanthus simulans Pays.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CASI5 Element Code  PDBRA0M0H0
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 8, 2021 from

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