Abstract
The analysis of hydrocarbons and fatty acids in ten fern species indicate unique differences from plants in a higher phylogenetic order. Significant concentrations of fatty acids above C 20 are present. Distributions of hydrocarbons range from C 15–C 33 with a trend towards two maxima at C 17 and C 29. Homologous series of n-alkenes are present in all species. Pristane and phytane are large components representing up to 27% of the alkanes. Distinct alkane and fatty acid differences between fern families are observed while species variations within families are slight.
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