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Angelo Troìa

  • Biodiversity Journal, 6 (1): 215-218 - MONOGRAPH

    Angelo Troìa, Francesco Maria Raimondo & Werner Greuter
    Lycopodiidae for the “Flora Critica d’Italia”: material and methods
    Proceedings of the 2nd International Congress “Speciation and Taxonomy”, May 16th-18th 2014, Cefalù-Castelbuono (Italy)

    ABSTRACT
    Procedures are presented that were followed during the preparation of the first pteridophyte family treatments for the “Flora Critica d’Italia”: Lycopodiaceae, Isoetaceae, Selaginellaceae. The work was mainly based on the study of literature and herbarium specimens. In some cases SEM observation of spores has proved useful. Data collected from herbarium specimens and other verified sources were loaded into a database, from which a distribution map was prepared for each taxon. Several preliminary papers have been published, and for each family a taxonomic conspectus, with type designations, maps and an identification key, has been prepared. The treatment of these three families for the “Flora Critica d’Italia” (in Italian) is about to be published or (Isoetaceae) has already been published.

  • Biodiversity Journal, 3 (4): 369-374

    Angelo Troìa
    Insular endemism in the Mediterranean vascular flora: the case of the Aeolian Islands (Sicily, Italy)

    ABSTRACT
    The present paper briefly provides the state of the art of the knowledge on vascular plant endemism in the oceanic (“thalassogenous”) Aeolian Archipelago (Sicily). Preliminary analysis of distribution areas and review of recent literature on biosystematics of endemic species revealed that: (a) Aeolian strictly endemic taxa are just 6, i.e. about the 0.7% of the local vascular flora; among them, just 4 can be considered (with doubt) derived from in situ evolution. (b) The other 18 endemics are taxa occurring in wider areas, so they cannot be generally considered “locally evolved” but relicts. This preliminary analysis confirms that not only continental (“chersogenous”) but all Mediterranean islands are primarily conservative rather than evolutionary active systems.