Hypericum

Definitions

  • WordNet 3.6
    • n 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
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Webster's Revised Unabridged Dictionary
    • n Hypericum (Bot) A genus of plants, generally with dotted leaves and yellow flowers; -- called also St. John's-wort.
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Century Dictionary and Cyclopedia
    • n Hypericum A large genus of plants, the type of the natural order Hypericineæ containing about 160 species, very generally distributed over the earth, characterized by having pentamerous flowers with the stamens commonly clustered into 3 to 5 parcels. They are herbs or shrubs with cymose yellow flowers. H. perforatum, or St.-John's-wort, is a small species, which derives its specific name from the fact that the pellucid dots common to the leaves of most of the species are in it peculiarly conspicuous, so as to give the leaf the appearance of being perforated. It is a native of Europe, now extensively naturalized in the United States. H. Ascyron, the great St.-John's-wort of the eastern United States, is a tall shrubby plant with pods an inch or more long. H. Kalmianum, Kalm's St.-John's-wort, is a bushy shrub 1 to 6 feet high, growing along the northern lakes. H. nudicaule is the orange-grass or pineweed, common in sandy fields. H. mutilum, the dwarf St.-John's-wort, only 3 to 9 inches high, is common in low grounds everywhere in the eastern United States. H. Androsæmum, the tutsan or tutsan hypericum, is a somewhat woody species of southern Europe and central Asia. From its succulent capsule, which turns red and then black, it is placed by some in a separate genus. It was once considered a panacea. H. quadrangulum of Europe is the St.-Peter's-wort or hard-hay. H. aureum is a handsome species of the southern United States.
    • n Hypericum [l. c] A plant of this genus.
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Chambers's Twentieth Century Dictionary
    • n Hypericum hī-per′i-kum a large genus of plants, of which St John's wort is a typical species.
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Etymology

Webster's Revised Unabridged Dictionary
L., fr. Gr. , ; under, among + , , heath, heather
Chambers's Twentieth Century Dictionary
Gr. hypo, under, ereikē, heath.

Usage

In literature:

St. John's-wort (Hypericum perforatum) is an intrusive weed in all hilly pastures, etc., and may fairly be called a social plant.
"More Letters of Charles Darwin" by Charles Darwin
Another Hypericum is likewise found in lately cleared places.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Hypericum montanum (Mountain St. John's-wort) .
"Handbook to the Severn Valley Railway Illustrative and Descriptive of Places along the Line from Worcester to Shrewsbury" by J. Randall
The genus Hypericum has only showy plants.
"The Highlands of Ethiopia" by William Cornwallis Harris
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In news:

2/ Tiger vanda orchids with hypericum berries wrapped completely in black silk organza.
Written records document the use of Hypericum perforatum, otherwise known as St John's wort, as early as the Middle Ages.
Written records document the use of Hypericum perforatum, otherwise known as St John's wort , as early as the Middle Ages.
Most St John's worts are in the Hypericum genus, the most common being Hypericum perforatum.
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In science:

Temple & Ellenberg (2000) and Hypericum Depression Trial Study Group (2004)), to ensure for assay sensitivity of the trial.
The assessment and planning of non-inferiority trials for retention of effect hypotheses - towards a general approach
Hypericum Depression Trial Study Group (2004). Effect of hypericum perforatum (St John’s Wort) in ma jor depressive disorder.
The assessment and planning of non-inferiority trials for retention of effect hypotheses - towards a general approach
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