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Papers by Laura Guglielmone

Plants

A contribution to the nomenclature of the genus Sagina is presented. The following 10 taxa are re... more A contribution to the nomenclature of the genus Sagina is presented. The following 10 taxa are recognized as being part of the Italian flora: S. alexandrae, S. apetala, S. glabra, S. maritima, S. micropetala, S. nodosa, S. pilifera, S. procumbens, S. revelierei, and S. saginoides subsp. saginoides. The names S. apetala var. decumbens (=S. apetala subsp. apetala), S. bryoides (=S. procumbens), S. patula (=S. apetala subsp. apetala), S. revelierei, Spergula glabra (=S. glabra), Spergula pilifera (=S. pilifera), and Spergella subulata var. macrocarpa (=S. saginoides subsp. saginoides) are here typified. Specimens deposited at B-W, C, E, and LY, and illustrations by Reichenbach were considered for the typifications. Specifically, two Reichenbach’s illustrations are chosen for S. bryoides and S. saginoides var. macrocarpa. A specimen at B-W is designated as the lectotype of S. glabra. Two specimens at C and G are designated as the lectotypes of S. apetala var. decumbens and S. revelierei...

Identifying areas susceptible to invasion by an alien species is a strategy of prevention. We use... more Identifying areas susceptible to invasion by an alien species is a strategy of prevention. We used national herbaria and global databases to assess the invasion trends of the two aquatic invasive species Ludwigia hexapetala and Ludwigia peploidessubsp. montevidensis in Italy. We defined the invasion status with invasions curves and predicted potentially suitable areas with Species Distribution Models based on WorldClim variables and the human footprint index. Low seasonal variation in temperature and precipitation, temperature ≥ 20 °C in the warmest, driest and wettest periods of the year and precipitation in the coldest period are the bioclimatic factors that most account for the potential distribution of the two species. The human footprint has lower relative importance than bioclimatic variables. All Italian peninsula appears as a suitable bioclimatic environment for the invasion of the two Ludwigia species, except the Alps and the highest peaks in the Apennine. Based on the curr...

Biological Invasions

We analysed the invasion history of two North American macrophytes (Elodea canadensis and E. nutt... more We analysed the invasion history of two North American macrophytes (Elodea canadensis and E. nuttallii) in Italy, through an accurate census of all available herbarium and field records, dating between 1850 and 2019, and a rich literature collection describing the initial introduction and naturalisation phase that supports the results obtained by the occurrence records. Elodea canadensis arrived in Italy before 1866 and had two invasion phases, between the 1890s and 1920s and between the 1990s and 2000s; E. nuttallii, probably arrived in the 1970s, started invading in 2000 and the invasion is still ongoing. Botanical gardens and fish farming played a crucial role in dispersal and naturalisation of both species. The current invasion range of both species is centred in northern Italy, with scattered occurrences of E. canadensis in central and southern regions. River Po represents a dispersal barrier to the Mediterranean region and a strategic monitoring site to prevent the invasion in...

XXV Convegno ANMS "Cose di Scienza", 2017

TAXON, 2019

Giovanni Casaretto (1810–1879) was appointed by King Charles Albert of Savoy‐Carignano, Kingdom o... more Giovanni Casaretto (1810–1879) was appointed by King Charles Albert of Savoy‐Carignano, Kingdom of Sardinia, as the botanist and mineralogist of a planned circumnavigation of the globe. After collecting in a few localities in southern Brazil and Uruguay, Casaretto collected for almost nine months, from April to December 1839, in Rio de Janeiro and its vicinity. While in Rio, he also bought about 100 collections from Riedel and about 500 collections from Clausen, which were made in the states of Rio de Janeiro, São Paulo, and Minas Gerais, which he re‐numbered and integrated into his collections. He also made significant collections in the state of Bahia, and a few collections in and around Recife (Pernambuco). Based on the preceding collections, Casaretto published a total of 101 names (in 36 plant families, delimited according to APG III), of which, according to the present study, 27 names are currently accepted, 12 serve as basionyms for currently accepted names, 7 are illegitimat...

Revista Mexicana de Biodiversidad, 2019

Phytotaxa, 2016

Astragalus vulnerarioides Allioni (1785a: 343) was first described from Mt. Cenis, between the Co... more Astragalus vulnerarioides Allioni (1785a: 343) was first described from Mt. Cenis, between the Cottian and Graian Alps (western Alps, France), probably based on herbarium specimens collected by Allioni. The author cited two illustrations in the protologue, which are consequently original material for the name (Art. 9.3 of the ICN, McNeill et al. 2012). The illustrations were drawn by F. Peyrolery. The first was published in the third volume of Flora Pedemontana (T. XIX, Fig. 2, Allioni 1785b), while the second is an unpublished illustration from the Iconographia Taurinensis (Vol. XV, T. 79, Fig. 2, 1765), a collection of watercolours from the 18th and first half of the 19th centuries, housed in the Library of the Department of Plant Biology of the University of Torino (Forneris 2008). Both these illustrations match Allioni’s’ diagnosis, were cited in the protologue and correspond to the current concept of the species.

Pinellia ternata is a small geophyte endemic to East-Asia, and well-known in traditional herbal C... more Pinellia ternata is a small geophyte endemic to East-Asia, and well-known in traditional herbal Chinese medicine for its medicinal properties and recently, as an ornamental plant. For these reasons it was cultivated in the past in many Botanical Gardens around the world and because of its dispersal capability, in some regions it has become a casual (adventitious) or naturalized neophyte. In Europe, P. ternata was apparently first introduced and cultivated in 1829 near Ascoli Piceno (Italy) and later also in Botanical Gardens in Florence and Pavia. Subsequent data testify to its presence as a weed in Botanical Gardens in Austria (Graz, Klagenfurt, Salzburg) and Germany (Erlangen, Berlin, Görlitz, Kufstein). Since about the beginning of the 20 th century, P. ternata has been reported as a naturalized alien species in anthropic and natural environments in the Franconia region of Austria and in Graz cemetery. Our recent findings attest, for the first time, to the presence of P. ternata ...

Bothalia - African Biodiversity and Conservation

Developments in Agricultural and Managed Forest Ecology, 1991

ABSTRACT Saprophytic Fusarium spp., isolated from the rhizosphere of plants grown in soils suppre... more ABSTRACT Saprophytic Fusarium spp., isolated from the rhizosphere of plants grown in soils suppressive to Fusarium oxysporum f.sp. dianthi , actively colonized the rhizosphere of radish and melon plants. Their rhizosphere competence was higher in comparison to that shown by saprophytic Fusarium spp, isolated from the same suppressive soils, but showing only a slight antagonistic activity. Rhizosphere competence seems, therefore, to play an important role in disease suppressiveness in the studied system. Highly antagonistic and slightly antagonistic Fusarium spp., on the contrary, did not significantly differ for their ability to induce resistance to F.oxysporum f.sp. dianthi carnation plants, by means of preinoculation. Moreover, this phenomenon lasts for only a short period and does not seem, therefore, of practical interest.