CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record xylorhiza_cognata - Wed, Dec. 1, 2021, 10:34 ET b
Xylorhiza cognata
common nameMecca-aster
CalPhotos image
more photos
Glenn Vargas © 2002 California Academy of Sciences  Follow image link for photo data.
life formperennial herb
CA Rare Plant Rank
List 1B.2
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G2     G2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (13):
Lion Head Mountain (043D) 3311533, Seventeen Palms (046D) 3311631, Red Canyon (062C) 3311556, Cottonwood Spring (063A) 3311567, Cottonwood Basin (063B) 3311568, Mortmar (063C) 3311558, Thermal Canyon (064A) 3311661, Indio (064B) 3311662, Mecca (064D) 3311651, West Berdoo Canyon (081C) 3311672, Cathedral City (082C) 3311674, Myoma (082D) 3311673, Palm Springs (083D) 3311675
quad data info

Counties, states, regions:
Imperial (IMP), Riverside (RIV)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Sonoran desert scrub (SDScr)
blooming period Jan-Jun  
elevation range20 - 400 meters
Known mostly from Indio Hills and Mecca Hills. Threatened by vehicles. Potentially threatened by development. Possibly threatened by recreational activities and vehicles. See Brittonia 29:199-216 (1977) for revised nomenclature and description.
full nameXylorhiza cognata (Hall) T.J. Watson
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  XYCO2 Element Code  PDASTA1010
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. 1, 2021 from

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