Chemical Constituents of Equisetum ramosissimum Cloning and Characterization of DEADbox RNA Helicases Gene from the Fern Equisetum arvense Chemotaxonomic Studies on Equisetaceous Plants in China Three New Phenolic Glycosides from the Fertile Sprouts of Equisetum arvense Allelopathy of Equisetum arvense extract on seed germination and seedling growth of wheat Effect of Equisetum hyemale on Experimental Hyperlipemia in Rats and Its Toxic Test Chemical constituents of Equisetum ramosissimum Effect of total alkaloids of Equisetum pratense on amino acid neurotransmitters and Ach of striatum in rat brain Chemical constituents of Equisetum ramosissimum