CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record sidotheca_emarginata - Sat, Dec. 4, 2021, 18:33 ET b
Sidotheca emarginata
common namewhite-margined oxytheca
CalPhotos image
more photos
© 2005 US Forest Service  Follow image link for photo data, and for images listed as "Oxytheca emarginata".
Link to images listed as "Sidotheca emarginata"
life formannual herb
CA Rare Plant Rank
List 1B.3
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.3: Not very endangered in California
state rank
S3      ranking system key
global rank
G3     G3: 21-80 occurrences or 3,000-10,000 individuals OR 10,000-50,000 acres
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (5):
Toro Peak (065C) 3311654, Palm View Peak (066A) 3311665, Idyllwild (066B) 3311666, Butterfly Peak (066D) 3311655, San Jacinto Peak (083C) 3311676
quad data info

Counties, states, regions:
Riverside (RIV)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Lower montane coniferous forest (LCFrs)
•Pinyon and juniper woodland (PJWld)
blooming period (Feb),Apr-Jul(Aug),   Months in parentheses are uncommon.
elevation range1200 - 2500 meters
Threatened by development, grazing, recreational activities, and trampling. See University of California Publications in Botany 1: 75 (1902) for original description, Harvard Papers in Botany 9(1): 211 (2004) for revised nomenclature, and Phytologia 66(4): 388 (1989) for taxonomic treatment.
full nameSidotheca emarginata (H.M. Hall) Reveal
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  PDPGN0J030
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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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 Sat, Dec. 4, 2021 from

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