Taxonomic and phytogeographical considerations on Hyoseris taurina (Compositae), a S. Tyrrhenian element
Taxonomic and phytogeographical considerations on Hyoseris taurina (Compositae), a S. Tyrrhenian element
Hyoseris taurina is a chasmophyte occurring on the siliceous coastal cliffs of S.W. Sardinia, N.E. Sicily, S. Calabria, the Aeolian islands, N.W. Tunisia, and the island of La Galite. It is a typical S. Tyrrhenian element, a remnant of the Tertiary flora, morphologically well separated from the other Hyoseris species. Phytosociologically it characterizes a new association of the Crithmo-Limonietea, the Hyoseridetum taurinae, with several vicarious, floristically and phytogeographically distinct subassociations.