Calflora
Taxon  Report   8370 
Xylorhiza cognata  (H. M. Hall) T. J. Watson
Mecca aster,  Mecca woodyaster
Xylorhiza cognata
© 2011 Aaron E. Sims
More photos from
CalPhotos / Calflora
Xylorhiza cognata
© 2011 Aaron E. Sims
Xylorhiza cognata, a dicot, is a perennial herb that is native to California and is endemic (limited) to California.
CNPS Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   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
Xylorhiza cognata
© 2012 Keir Morse
Family: ASTERACEAE  
Genus: Xylorhiza
Community:
Creosote Bush Scrub
Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Aster cognatus
PLANTS: Aster standleyi
PLANTS: Xylorhiza standleyi
CNPS + PLANTS: Machaeranthera cognata
More information about  Xylorhiza cognata
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on PlantID.net

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)

USDA PLANTS Profile (XYCO2)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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: Apr 22, 2018).

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