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Hypericum perforatum

LC control 88022845
LC classificationQK495.G87
Topical headingHypericum perforatum
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Variant(s)Common Saint Johnswort
Klamath weed
Perforate Saint Johnswort
Saint Johns-wort, Common
Saint Johnswort, Common
St. Johnswort, Common
Tipton's weed
See alsoHypericum
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Found inKatzenstein, L. Secrets of St. John's wort, c1998: p. 17.
St. John's wort : the mood enhancer, c1997: index.
USDA Plants Database, June 18, 2008: name search (Hypericum perforatum, Common St. Johnswort)
Interactive Flora of NW Europe website, June 18, 2008: species search (Hypericum perforatum, Perforate St. John"s-wort)
Wikipedia online, June 25, 2008 (St. John's wort; used alone refers to the species Hypericum perforatum; also known as: Tipton's Weed or Klamath weed; Hypericum perforatum is also sometimes called: Common St. John's wort to differentiate it from other species of Hypericum)