ABSTRACT Advances in research on phytochemistry of Pteridophyta since 1999 are reviewed. Recent results on flavonoids, phenolic acid derivatives, coumarins, isoprenoids, polar lipids, wax constituents are described together with carcinogenicity of few ferns, potential use of some ferns in phytoremediation, effects of UV-B and UV-C radiations and effects of CO2 concentration.
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