Airborne pollens analysis in Cagliari (south Sardinia) : observations on Ailanthus altissima (Miller) Swingle,Casuarina equisetifolia J .R. & G. Foster and Schinus molle L.

In this paper the phenological and airborne pollens dispersal data of Casuarina equisetijolia J .R. & G. Foster, Ailanthus altissima (Miller) Swingle and Schinusmolle L., three exotic species widely used for street planting, are examined. The findings have enabled a detailed identification of the phenological stages and to determine the amount of airborne pollens of each species, resulting in a better understanding of their biorhythms and of their pathogenic role.peer-reviewe

Iridoid glucosides from Pentas lanceolata (Forssk.) Deflers growing on the Island of Sardinia

The ethanolic extract of Pentas lanceolata (Forssk.) Deflers was investigated from a phytochemical point of view and in particular on the monoterpenoid glucosides content. Iridoid glucosides have a taxonomic relevance, e.g., asperuloside and its derivative are characteristic of the Rubioideae subfamily where this species is comprised. In the light of earliest phylogenetic molecular study which proposed to merge P. lanceolata in the Spermacoceae tribe, a phytochemical approach also becomes necessary for a correct classification of this species. A total of 12 compounds were identified in detail, ten of these are iridoid glucosides: asperuloside, asperulosidic acid, tudoside, E-uenfoside and Z-uenfoside previously identified in this genus; whereas, deacetyl-asperulosidic acid, ixoside, griselinoside, 6β,7β-epoxysplendoside were recognized here for the first time from P. lanceolata. Among the non-iridoidic compounds ursolic acid and d-xylose were identified

Studi sulla flora e la vegetazione di capo Carbonara (Sardegna meridionale): 1. la flora

The flora of Cape Carbonara, which is made up of 320 native species. The scarsity of the endemic component and the distinct prevalence of Terophyte is made evident. The climate characterized by its great dryness due to the scarsity of rainfall, among lowest in the Mediterraneum, is taken into consideration