St John's wort

Definitions of St John's wort

1. noun

   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
   types:

   Hypericum androsaemum, common St John's wort, tutsan

   deciduous bushy Eurasian shrub with golden yellow flowers and reddish-purple fruits from which a soothing salve is made in Spain

   Hypericum ascyron, Hypericum pyramidatum, great St John's wort

   perennial shrub having large star-shaped yellow flowers in narrowly pyramidal cymes

   Hypericum calycinum, creeping St John's wort

   creeping evergreen shrub with bright yellow star-shaped summer flowers; useful as ground cover

   Hypericum gentianoides, nitweed, orange grass, pine-weed, pineweed

   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

   type of:

   subshrub, suffrutex

   low-growing woody shrub or perennial with woody base