St John's wort

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Related to St John's worts: St. Johnswort
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Noun1.St John's wort - any of numerous plants of the genus Hypericum having yellow flowers and transparently dotted leaves; traditionally gathered on St John's eve to ward off evil
genus Hypericum, Hypericum - large almost cosmopolitan genus of evergreen or deciduous shrubs and herbs with often showy yellow flowers; cosmopolitan except tropical lowlands and Arctic or high altitudes and desert regions
common St John's wort, Hypericum androsaemum, tutsan - deciduous bushy Eurasian shrub with golden yellow flowers and reddish-purple fruits from which a soothing salve is made in Spain
great St John's wort, Hypericum ascyron, Hypericum pyramidatum - perennial shrub having large star-shaped yellow flowers in narrowly pyramidal cymes
creeping St John's wort, Hypericum calycinum - creeping evergreen shrub with bright yellow star-shaped summer flowers; useful as ground cover
Hypericum gentianoides, nitweed, orange grass, pineweed, pine-weed - annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers
Hypericum crux andrae, St Andrews's cross - shrubby plant having yellow to apricot flowers with four petals arranged in a cross; southeastern United States: New York to Texas
Hypericum hypericoides, low St Andrew's cross - low shrubby plant having yellow flowers with four petals arranged in a cross; Bermuda and southeastern United States to West Indies and eastern Mexico
Hypericum perforatum, klammath weed - yellow-flowered perennial common in fields and waste places but a weed in rangelands
Hypericum prolificum, Hypericum spathulatum, shrubby St John's wort - stiff shrub having oblong entire leaves and dense cymes of yellow flowers
Hypericum maculatum, Hypericum tetrapterum, St Peter's wort - European perennial St John's wort; Ireland and France to western Siberia
Hypericum virginianum, marsh St-John's wort - perennial marsh herb with pink to mauve flowers; southeastern United States
subshrub, suffrutex - low-growing woody shrub or perennial with woody base
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