American Journal of Botany 98(2): 306–325, 2011; http://www.amjbot.org/ © 2011 Botanical Society of America morphologically heterogeneous and ecologically diverse. Growth forms include large tropical rainforest trees, temperate and high altitude tropical herbs and shrubs, and aquatic plants of swiftfl owing rivers and streams. Although their distribution is nearly cosmopolitan, their greatest s...

BACKGROUND Hypericum is a well-known plant genus in herbal medicine. Hypericum mysorense (Family: Hypericaceae), a plant belonging to the same genus, is well known in folklore medicine for its varied therapeutic potential. OBJECTIVE The aim of the present study was to investigate the different parts of the plant for antioxidant and hepatoprotective properties. MATERIALS AND METHODS The meth...

Background and Purpose: Hypericum perforatum belonging to the family Hypericaceae is a reputed medicinal plant including a wide ranges of important phytochemical components. Chlorogenic acid, rutin, hyperoside, quercitrin, quercetin, pseudohypericin, hypericin and hyperforin are of the major components. Crude extract and individual compounds of H. perforatum have been reported to exert antidepr...

The insecticidal and antifeedant activity of extracts derived from different plants of Aesculus hippocastanum L. (Hippocastanaceae), Viscum album L. (Loranthaceae), Sambucus nigra L. (Caprifoliaceae), Buxus sempervirens L. (Buxaceae), Diospyros kaki L. (Ebenaceae), Artemisia absinthum L. (Compositae), Alnus glutiosa Goertn. (Betulaceae), Origanum vulgare L., (Labiatae), Hypericum androsaemum L....

Photo 1: Los Quetzales National Park, located at 3.020 m a.s.l. in the Pacific slope of Talamanca Mountain Range, Costa Rica. This area includes Cerro de la Muerte with largest extent paramo ecosystem country, which is a grass- or shrub-dominated cool and wet upper slopes Neotropical mountains. credit: María A. Maglianesi. 2: The honeybee Apis mellifera visiting Vaccinium consanguineum. bee spe...

The study shows the influence of the origin of plant material and biological source on the in vitro antioxidant (neutralization of DPPH and OH radical, nitric oxide, and inhibition of lipid peroxidation) and anticholinesterase activity of chemically characterized and quantified ethanol extracts of ten St. John's wort samples. The investigated samples were: five Hypericum perforatum species repr...

Background and objectives: Hypericum perforatum L., commonly known as St. John’s wort (SJW) from the family Hypericaceae is a famous medicinal plant used to treat mild to moderate depression; so, it might affect the pharmacokinetics of numerous drugs. Due to widespread herb-drug interactions of SJW, this study was designed to review the clinical evidences regarding the...