Taxonomical remarks on the genus Helichrysum Miller (Asteraceae) in Sardinia – On the basis of field work and herbarium investigation, a taxonomical study about the genus Helichrysum in Sardinia, including ecologic and chorological considerations, was carried out. The following taxa resulted to be present on the island: H. saxatile ssp. saxatile, an endemic chasmophyte circumscribed to the calcareous massifs of CE Sardinia; H. saxatile ssp. morisianum ssp. nov., endemism localized in some rocky places of S Sardinia; H. italicum ssp. italicum, a widely distributed Tyrrhenian element, in Sardinia only occurring on some mountains places; H. italicum ssp. pseudolitoreum, a C Mediterranean chasmophyte, localized in the calcareous cliffs of the SW Sardinia; H. italicum ssp. microphyllum, a subspecies distributed in Crete, Sardinia, Corsica and Balearic Islands, widely ranging in Sardinia from the sea level to the highest peaks, on all kind of soils; H. frigidum, endemic to Sardinia and Corsica, widespread on the granitic Corsican massifs, but in Sardinia only found on Mount Limbara, according to old herbarium specimens never reasserted in recent times; H. montelinasanum, a chasmophyte allied to the previous one and exclusive on some siliceous mountains of SW Sardinia.
Note sul genere Helichrysum Miller (Asteraceae) in Sardegna
BACCHETTA, GIANLUIGI;
2003-01-01
Abstract
Taxonomical remarks on the genus Helichrysum Miller (Asteraceae) in Sardinia – On the basis of field work and herbarium investigation, a taxonomical study about the genus Helichrysum in Sardinia, including ecologic and chorological considerations, was carried out. The following taxa resulted to be present on the island: H. saxatile ssp. saxatile, an endemic chasmophyte circumscribed to the calcareous massifs of CE Sardinia; H. saxatile ssp. morisianum ssp. nov., endemism localized in some rocky places of S Sardinia; H. italicum ssp. italicum, a widely distributed Tyrrhenian element, in Sardinia only occurring on some mountains places; H. italicum ssp. pseudolitoreum, a C Mediterranean chasmophyte, localized in the calcareous cliffs of the SW Sardinia; H. italicum ssp. microphyllum, a subspecies distributed in Crete, Sardinia, Corsica and Balearic Islands, widely ranging in Sardinia from the sea level to the highest peaks, on all kind of soils; H. frigidum, endemic to Sardinia and Corsica, widespread on the granitic Corsican massifs, but in Sardinia only found on Mount Limbara, according to old herbarium specimens never reasserted in recent times; H. montelinasanum, a chasmophyte allied to the previous one and exclusive on some siliceous mountains of SW Sardinia.
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