Calflora: Hypericum perforatum

Calflora

Taxon Report 4312

Hypericum perforatum L.

Common st. johnswort, Klamath weed, Klamathweed

More photos from
CalPhotos / Calflora

Hypericum perforatum, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: Moderate


	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

Family:	HYPERICACEAE (PLANTS: CLUSIACEAE)
Genus:	Hypericum
Subspecies and Varieties:
Hypericum perforatum ssp. perforatum

Communities:	weed, characteristic of disturbed places
Habitat:	disturbed, disturbed
Wetlands:	Occurs usually in non wetlands, occasionally in wetlands

Distribution by County

Add an Observation of Hypericum perforatum

Name Status:

Accepted by ICPN + PLANTS + JM93

More information about Hypericum perforatum


	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 (HYPE)		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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/ (Accessed: Apr 20, 2018).

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