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Contribution to a Taxonomic Revision of the Sicilian Helichrysum Taxa by PCA Analysis of Their Essential‐Oil Compositions
Author(s) -
Maggio Antonella,
Bruno Maurizio,
Guarino Riccardo,
Senatore Felice,
Ilardi Vincenzo
Publication year - 2016
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201500052
Subject(s) - taxon , asteraceae , botany , biology , genus , essential oil , sicilian , zoology , linguistics , philosophy
Abstract The chemical profile of the essential oils in ten populations of the genus Helichrysum Mill . (Asteraceae), collected in the loci classici of the nomenclatural types of the taxa endemic to Sicily, were analyzed. Our results confirm that the analysis of secondary metabolites can be used to fingerprint wild populations of Helichrysum , the chemical profiles being coherent with the systematic arrangement of the investigated populations in three main clusters, referring to the aggregates of H. stoechas, H. rupestre , and H. italicum , all belonging to the section Stoechadina. The correct nomenclatural designation of the investigated populations is discussed and the following two new combinations are proposed: Helichrysum preslianum subsp. compactum (G uss .) Maggio, Bruno, Guarino, Senatore & Ilardi and Helichrysum panormitanum subsp. latifolium Maggio, Bruno, Guarino, Senatore & Ilardi .