Johnswort

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• Hypericum perforatum — ID 41850 Symbol Key HYPE Common Name common St. Johnswort Family Clusiaceae Category Dicot Division Magnoliophyta US Nativity Introduced to U.S. US/NA Plant Yes State Distribution AR, CA, CO, CT, DC, DE, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD …   USDA Plant Characteristics

• St John's wort — Hypericum perforatum St John s wort Scientific classification Kingdom: Plantae (unranked) …   Wikipedia

• weed — weed1 weedless, adj. weedlike, adj. /weed/, n. 1. a valueless plant growing wild, esp. one that grows on cultivated ground to the exclusion or injury of the desired crop. 2. any undesirable or troublesome plant, esp. one that grows profusely… …   Universalium

• Weed — /weed/, n. Thurlow /therr loh/, 1797 1882, U.S. journalist and politician. * * * Any plant growing where it is not wanted. On land under cultivation, weeds compete with crops for water, light, and nutrients. On rangelands and in pastures, weeds… …   Universalium

• Hypericum boreale — ID 41762 Symbol Key HYBO2 Common Name northern St. Johnswort Family Clusiaceae Category Dicot Division Magnoliophyta US Nativity Native to U.S. US/NA Plant Yes State Distribution CT, DE, IA, IL, IN, MA, ME, MI, MN, NC, NH, NJ, NY, OH, OR, PA, RI …   USDA Plant Characteristics

• Hypericum cumulicola — ID 41783 Symbol Key HYCU Common Name highlands scrub St. Johnswort Family Clusiaceae Category Dicot Division Magnoliophyta US Nativity Native to U.S. US/NA Plant Yes State Distribution FL Growth Habit Forb/herb Dur …   USDA Plant Characteristics

• Hypericum — Taxobox name = Hypericum image width = 240px image caption = Hypericum × moserianum regnum = Plantae divisio = Magnoliophyta classis = Magnoliopsida subclassis = Rosidae unranked ordo = Eurosids I ordo = Malpighiales familia = Clusiaceae… …   Wikipedia

• Pharmacognosy — is the study of medicines derived from natural sources. The American Society of Pharmacognosy [ [http://www.phcog.org/definition.html The American Society of Pharmacognosy ] ] defines pharmacognosy as the study of the physical, chemical,… …   Wikipedia

• Active ingredient — An active ingredient (AI), also active pharmaceutical ingredient (API) or bulk active, is the substance in a drug that is pharmaceutically active. The term is similarly used in pesticide formulations where active substance is also used. Some… …   Wikipedia

• Taxonomy of the Clusiaceae — The family Clusiaceae was divided by Cronquist into 2 subfamilies: the Clusioideae (typical subfamily) and the Hypericoideae. The latter was often treated as a family the Hypericaceae or St. John s wort family. Elements of the Hypericoideae are… …   Wikipedia