Search results for "Alien flora"

Solanum lanceolatum (Solanaceae) in Sicily: A new alien species for the European flora

2015

Solanum lanceolatum Cav. (Solanaceae) is a species native to Central America (Mexico, Belize, Guatemala and Panama), that has been found naturalized near Sutera and Porto Empedocle (Sicily). This is the first record in Italy and Europe.

Stazioni nuove di Euphorbia hypericifolia (Euphorbiaceae) e di Phyllanthus tenellus (Phyllanthaceae) in Sicilia

2017

New localities for Euphorbia hypericifolia (Euphorbiaceae) and Phyllanthus tenellus (Phyllanthaceae) in Sicily – Two new adventive plants, Euphorbia hypericifolia (Euphorbiaceae) and Phyllanthus tenellus (Phyllanthaceae), are reported in the Palermo’s urban area. These two taxa belonging to closely related families were both already known from the province of Messina (E. Sicily), the first one near the Messina town, the second near Taormina. The new localities expand toward west the Sicilian distribution of the two taxa, so that these appear to likely occur in other urban contexts of the island. Finally, as far as the accession road to the island is concerned, the- se two aliens – that have…

New records of Asteraceae for the non-native flora of Tunisia and north Africa with some nomenclatural remarks

2022

International audience; Sixteen new Asteraceae are added to the non-indigenous flora of Tunisia. Six of them (Dimorphotheca ecklonis, Gaillardia pulchella, Gazania linearis var. linearis, Guizotia abyssinica, Rudbeckia triloba and Tithonia diversifolia) are also new for the flora of North Africa. Chrysanthemum morifolium is here first reported for the Mediterranean Basin. Seven genera (Argyranthemum, Bidens, Dimorphotheca, Gaillardia, Guizotia, Rudbeckia and Tithonia) are recorded for the first time for the vascular flora of Tunisia. Most of these species escaped from gardens and pots and became casual along roadsides and/or disturbed areas after cypsela dispersion (except for Chrysanthemum…

Vascular flora evolution in the major Mediterranean islands

2012

Characteristics of Mediterranean island floras are analyzed with stress on endemic units. On these bases the main relationships between the major Mediterranean areas and the inland territories with the strongest floristic affinities are analyzed. Finally the role of aliens in Mediterranean island floras and threats are discussed.

Contribución al conocimiento de la flora alóctona abulense (Ávila, España)

2012

Se aportan datos corológicos de catorce plantas vasculares presentes en la provincia de Ávila (España). De ellas, cinco son primeras citas provinciales: Chamaesyce prostrata (Aiton) Small, Conyza sumatrensis (Retz.) E. Walker, Helianthus tuberosus L., Melia azedarach L. y Panicum miliaceum L. El resto de plantas vasculares no son muy conocidas en la zona. Para cada una de ellas se aporta información florística y bibliográfica.SUMMARY: Chorological data concerning fourteen species of invasive vascular plants in Ávila province (Spain) are shown. Among them, we must highlight Chamaesyce prostrata (Aiton) Small, Conyza sumatrensis (Retz.) E. Walker, Helianthus tuberosus L., Melia azedarach L. a…

Principi di spontaneizzazione in Sicilia di Talinum paniculatum (Talinaceae)

2017

Record of Talinum paniculatum (Talinaceae) naturalized in Sicily. – The record in the urban context of Palermo (Sicily) of Talinum paniculatum, species native to Tropical America and mainly cultivated for ornamental purposes, is reported. It is the first case of naturalization in the Island of a species of Talinaceae family introduced to Palermo in 1984 from Argentina and cultivated in the Botanical Garden collections.

DETECTING INVASION HOTSPOTS OF AILANTHUS ALTISSIMA WITH REMOTE SENSING

2014

Study of the alien flora of the urban area of Palermo (Sicily)

2016

Alien plants are an integral part of the Mediterranean agricultural and urban landscape. Taking into account that man is an active voluntary or involuntary carrier of plant diasporas, cities and areas where human activity is predominant represent preferential targets for the study of new plant introductions. In addition, some species as Pennisetum setaceum (Forssk.) Chiov. and Opuntia ficus-indica (L.) Mill., initially exclusive to high disturbed habitats, succeeded in penetrating in cliffs, degraded maquis and garrigues characterizing them. Thus the importance of studying these areas to predict future colonization of more natural habitats. Starting from literature and integrating it with f…

Sul rinvenimento di Centaurea diluta (Compositae) esotica spontaneizzata in Calabria

2010

On the finding of Centaurea diluta (Compositae) exotic naturalized in Calabria - The occurrence in Calabria (S-Italy) of Centaurea diluta Aiton, a dangerous alien invasive species of cereals crops and waste grounds, is here reported for the first time. New data are added about the alien status in Italy.

The recent spread of the invasive woody alien plant Melia azedarach L. (Meliaceae) in Sicily

2013

This paper aims at reporting the ongoing process of naturalization of Melia azedarach L. in Sicily. In fact, over half a century after the first detection of spontaneous self-sown seedlings, an abrupt increase of naturalization cases has been recorded by the authors during the last twenty years. More in detail, M. azedarach successfully colonized many suburban lowland areas along the coasts of the island which are characterised by thermo-Mediterranean bioclimate. According to both field and literature data, a gradual spread of M. azedarach in the island can be expected, although it is not possible to predict the speed with which this will occur. Historical information on its introduction at…