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Taxon  Report  
Hypericum canariense  L.
Canary island st. johnswort
Hypericum canariense is a shrub that is not native to California.
Cal-IPC rating: moderate
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Observation Search
~835 records in California
redone or more occurrences
within a 7.5-minute quadrangle
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Bloom Period
Genus: Hypericum
Family: Hypericaceae  
(Clusiaceae)
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF + PLANTS

Information about  Hypericum canariense from other sources

[Cal-IPC] Invasiveness: Hypericum canariense (Canary Island Hypericum) is a rhizomatous perennial shrub (family Clusiaceae) found on the central and south coast of California and in the southern San Francisco Bay region. Canary Island Hypericum infests disturbed areas, especially in coastal sage scrub and grassland habitats. This ornamental shrub forms dense stands that exclude native species. It is not yet widespread, but its prolific seed production makes rapid spread possible. (link added by Mary Ann Machi)

[Wikipedia] Endemic to the Canary Islands and Madeira. Noxious weed status: Hypericum canariense is a species of flowering plant in the family Hypericaceae known by the common name Canary Islands St. John's wort. It is the sole member of Hypericum sect. Webbia. It is endemic to the Canary Islands and Madeira, where it grows in low-moisture scrub and forested slopes of the five westernmost islands from 150 to 800m. It is also known as an introduced species in Australia, New Zealand, and the US states of California and Hawaii, where it is an escaped ornamental plant and generally considered a minor noxious weed. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/23/2024).