The aim of this work was to investigate the composition of essential oils isolated from fruits of
Peucedanum longifolium, and
Rhizomatophora aegopodioides (a species which was previously placed in the genus
Peucedanum), as well as to compare the obtained results to
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The aim of this work was to investigate the composition of essential oils isolated from fruits of
Peucedanum longifolium, and
Rhizomatophora aegopodioides (a species which was previously placed in the genus
Peucedanum), as well as to compare the obtained results to those available for other previously investigated related species (including taxa which are also, according to some authors, excluded from the genus
Peucedanum). Essential oils were obtained via hydrodistillation in a Clevenger-type apparatus and their composition was analyzed using GC-FID and GC-MS. To compare these data to those of previously investigated taxa, a chemometric approach was applied; the data were analyzed using multivariate statistical methods: non-metric multidimensional scaling (nMDS) and hierarchical cluster analysis. The most abundant in
P. longifolium essential oil were monoterpenes (79.7%), mostly
α-phellandrene (26.2%),
β-phellandrene + limonene (21.0%) and myrcene (9.5%), followed by sesquiterpenes (18.3%), mostly germacrene B (9.5%). On the other hand, dominant in
R. aegopodioides essential oil were non-terpenic aliphatic hydrocarbons (46.1%), mainly
n-undecane (16.5%) and
n-nonane (11.3%). In addition, this essential oil also contained a notable quantity of sesquiterpenes (25.1%), with (
E)-sesquilavandulol being the most abundant (10.0%). The results of multivariate statistics revealed a clear separation of the essential oil composition of
R. aegopodioides and
P. longifolium, as well as of
P. longifolium and
P. officinale. The clustering of the samples of most of the taxa that do not belong to the
Peucedanum in the narrow sense (
sensu stricto) was also observed, which is in accordance with their recent inclusion in separate genera.
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