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14 Giardina & al.: A catalogue of plants growing in Sicily

Technical notes
1. Criteria to include taxa

The taxa included in the present catalogue are:
i) Native including archeophytes;
ii) Aliens;
iii) Vegetables and crops cultivated for agriculture on a wide scale characterizing the land-
scape;
iv) Vegetables and crops cultivated for agriculture on a small scale and not characterizing
the landscape, but acquired in popular culture (officinal, medicinal, significant in rural
life: for ex. Morus alba, Morus nigra, Cannabis sativa, etc. in the past, or for ex.
Fortunella margarita in present time). Many recently introduced agricultural plants,
both naturalized and not traditional plants (for ex. “kiwi” the Actinidia deliciosa,
famous to the costermongers) have not been included;
v) Plants reported from the near countries that could exists also in Sicily (for ex. some
subordinated taxa of Portulaca oleracea L.);
vi) Ornamental plants which have characterized the urban landscape (for ex. Phoenix
canariensis).
For a detailed discussion on aliens see Raimondo & al. (2005), with the introduction of
acronyms: An (naturalized alien), Ac (casual alien), Cs (cultivated and naturalized), Ccs
(cultivated and casually naturalized). When very unfrequent, Ac taxa are not included in
the Island Flora (and so not counted).

2. Acquisition of data and conventions in representations

This Catalogue is essentially based on literature data and, in the case of less known
species, in herbaria specimens. Even in the latter case, however the quotation is taken by
published works and referring to taxonomic updated records or to the new territorial dis-
tribution, excepting those cases of our direct observation indicated by an exclamation mark
(!). The author of the publication is easily recognizable by the name and followed by the
date of publication; the specimen’s collector is indicated in italics (the collection date pre-
cedes the name of the collector). When an author quotes several herbaria specimens, these
are separated by commas, while the following locality begins with an hyphen. The quota-
tions of several authors (literature record) for the same species are always separated by a
semicolon).
a) Reports with localities separated by a sign “+” are due to a single collector whose
name is at the end in italics and in brackets. E.g.: “V.ne Laneri + Pizzo Toscana al V.ne
Soldato + Contrada Le Valli alla Santissima (Triscari)”. Three sites, reported only by a sin-
gle collector (Triscari).
b) More localities can be grouped (through the sign “+”) for great territories, they are
always separated by a comma “,”. Therefore e.g the data “Ficuzza, Madonie, Etna:
Zafferana a Valle S. Giacomo + Aidone + S. Venerina + Bosco di Milo, Nebrodi: Valle del
Flascio + Cerami (Brullo & Marcenò 1984)” indicates that more localities belong to the
Etna Mountain and others to the Nebrodi Mountains.