Search for HYPERICUM+PERFORATUM returned 5 results.
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species: Hypericum perforatum – St. John's Wort
St. John's Wort, St John's Wort, Perforate St. John's Wort, Common St. John's Wort, Klamath Weed, Goat Weed
Kingdom: Plantae
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subspecies: Hypericum perforatum subsp. veronense ( ) – St John's Wort
Kingdom: Plantae
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variety: Hypericum perforatum var. angustifolium (accepted name: Hypericum perforatum subsp. veronense)
- Record a sighting
- Heteroptypic Synonym
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Biodiversity Science project: Glacier National Park Noxious Weed Blitz
We invite Citizen Scientists to participate in our annual Glacier National Park Noxious Weed Blitz each year on the third Tuesday in July (check our web page to confirm date). Citizen Scientists are trained to identify five invasive plants and map their locations with GPS units...
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Biodiversity Science project: St John's wort biocontrol
Hypericum perforatum St John's wort St John's wort is a toxic perennial weed in Australia which spreads into woodlands and displaces pasture species. This weed threatens native floral diversity and poisons stock when grazed. Fifteen potential biocontrol agents were studied in detail, and eleven were introduced to Australia. Of these, six biocontrol agent species have established: 1. St Johns wort gall midge *Zeuxidiplosis giardi* 2. St John's wort aphid *Aphis chloris* 3...
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