Taxon  Report   8429 
Crataegus monogyna  Jacquin
Hawthorn
Crataegus monogyna
© 2010 Phil Pullen
CalPhotos: click on a
photo to see it bigger
Crataegus monogyna
© 2007 Luigi Rignanese
Crataegus monogyna
© 2014 Jean Pawek
Crataegus monogyna, a dicot, is a shrub that is not native to California; it was introduced from elsewhere and naturalized in the wild.
It is an invasive plant. The California Invasive Plant Council classifies its potential impact on native ecosystems as limited (plant profile / CalWeedMapper).

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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
Crataegus monogyna
© 2007 Dr. Amadej Trnkoczy
Family: ROSACEAE  
Genus: Crataegus
Distribution by County 

Add an Observation of  Crataegus monogyna

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

PLANTS: Crataegus curvisepala
PLANTS: Crataegus oxyacantha var. paulii
PLANTS: Crataegus oxyacantha
More information about  Crataegus monogyna
Photos on CalPhotos / Google Images
Photos and ID tips from PlantID.net

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)

USDA PLANTS Profile (CRMO3)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Jun 25, 2016).

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