Taxon  Report   4312 
Hypericum perforatum  L.
Klamath weed, Klamathweed, common St. Johnswort
Hypericum perforatum, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

The California Invasive Plant Council classifies its potential impact on native ecosystems as moderate (plant profile / CalWeedMapper ).

 

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Bloom Period
Hypericum perforatum
© 2005 Louis-M. Landry
Hypericum perforatum
© 2008 Keir Morse
Hypericum perforatum
© 2006 Dr. Amadej Trnkoczy
Communities: weed, characteristic of disturbed places
Habitat: disturbed, disturbed [Walker]
Family: HYPERICACEAE   (PLANTS: CLUSIACEAE)
Genus: Hypericum
Subspecies and Varieties:
Hypericum perforatum ssp. perforatum
Add an Observation of Hypericum perforatum
Name Status:
Accepted by TJM2 + PLANTS + JM93
 
 Information about  Hypericum perforatum  from other sources:
USDA PLANTS Profile (HYPE)

Photos on CalPhotos / Flickr / Google Images

website references on Google

Jepson eFlora (TJM2)

Records from the Consortium of California Herbaria

Original Publication citation. on the International Plants Names Index

Search efloras.org (Flora of North America)

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]. 2014. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Jul 23, 2014).

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

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