Hypericum perforatum Calflora

Calflora

Taxon Report 4312

Hypericum perforatum L.

Common st. johnswort, Klamath weed, Klamathweed

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


	Plant Distribution Observation Hotline (observation details) Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos from CalPhotos / Calflora


Family:	HYPERICACEAE
Genus:	Hypericum
Subspecies and Varieties:
... ssp. perforatum

Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Habitat: disturbed, disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by ICPN + PLANTS

More information about Hypericum perforatum


Jepson eFlora USDA PLANTS Profile (HYPE)	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Photos on PlantID.net / Google Images Consortium of California Herbaria	Add an Observation Location Suitability Planting Guide Distribution by County
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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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: Mar 26, 2019).