Taxon  Report   161 
Ailanthus altissima  (Miller) Swingle
Ailanthus,  Tree of heaven
Ailanthus altissima
© 2005 George W. Hartwell
CalPhotos: click on a
photo to see it bigger
Ailanthus altissima
© 2012 Julie Kierstead Nelson
Ailanthus altissima
© 2009 Neal Kramer
Ailanthus altissima, a dicot, is a tree 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 moderate (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
Ailanthus altissima
© 2014 Dr. Amadej Trnkoczy
Family: SIMAROUBACEAE  
Genus: Ailanthus
Communities:
weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Wetlands:Usually occurs in non wetlands, but occasionally found in wetlands [U.S. Fish & Wildlife Service.]
Toxicity: MINOR, DERMATITIS   [California Poison Control System 2010]    
Distribution by County 

Add an Observation of  Ailanthus altissima

Name Status:
Accepted by TJM2 + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Ailanthus glandulosa
PLANTS: Toxicodendron altissimum
More information about  Ailanthus altissima
Photos on CalPhotos / Google Images
Photos and ID tips from PlantID.net

Conservation New England:  Ailanthus altissima is native to Asia, and began its journey west by being introduced to Europe in 1751 by a French Jesuit preist who brought it from Nanking, China to England. The first known specimen was brought into the United States a few decades later by William Hamilton, who planted this species in Philadelphia (Shah 1997). People admired the beautiful foliage of these fast-growing trees, and for over a century have been planting it as an ornamental ...

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)

USDA PLANTS Profile (AIAL)

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: Aug 28, 2016).

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