On the basis of floristic surveys, exam-ination of herbarium materials and literature review, notes on the presence and the status of naturalization of 34 exotic taxa of the flora of the Lazio region are presented. Amaranthus tricolor L. is to be excluded from the regional flora. Cuscuta epilinum Weihe is confirmed as casual. Rosa foetida Herrm. and Symphyotrichum lance-olatum (Willd.) G. L. Nesom are to be considered doubt. Twelve entities (six naturalized and six casual) are reported in literature and/or well documented by specimens, but they are not quoted in the recent flora of Lazio. Regarding the other 18 taxa, the status of naturalization are pointed out in comparison with the non-native flora of Italy. The exotic species of the Lazio flora are now 324 corresponding to 9,78% with an increas-ing of naturalized (1,74%) and invasive species (0,92%).
Sulla base di indagini di campo, analisi di materiali d’erbario e ricerche bibliografiche, si segna-lano novità relativamente alla presenza e allo status di naturalizzazione di 34 entità alloctone della flora laziale. Amaranthus tricolor L. è da escludere dalla flora regiona-le, Cuscuta epilinum Weihe viene confermata come casuale, Rosa foetida Herrm. e Symphyotrichum lanceola-tum (Willd.) G. L. Nesom sono da considerare dubbie e a ricercare. Dodici taxa (sei naturalizzate e sei casuali) risultano segnalate in bibliografia, ben documentate da campioni d’Erbario, ma non riportate nella Flora del Lazio di ANZALONE et al. (2010). Riguardo alle restanti 18 entità, si precisa lo status di naturalizzazione rispetto alla Flora Esotica d’Italia (CELESTI-GRAPOW et al., 2009b, 2010).
Aggiornamento alla flora esotica del Lazio (Italia centrale). I / Iamonico, Duilio; Iberite, Mauro; Edda, Lattanzi. - In: INFORMATORE BOTANICO ITALIANO. - ISSN 0020-0697. - STAMPA. - 44:2(2012), pp. 347-354.
Aggiornamento alla flora esotica del Lazio (Italia centrale). I.
IAMONICO, DUILIO;IBERITE, Mauro;
2012
Abstract
On the basis of floristic surveys, exam-ination of herbarium materials and literature review, notes on the presence and the status of naturalization of 34 exotic taxa of the flora of the Lazio region are presented. Amaranthus tricolor L. is to be excluded from the regional flora. Cuscuta epilinum Weihe is confirmed as casual. Rosa foetida Herrm. and Symphyotrichum lance-olatum (Willd.) G. L. Nesom are to be considered doubt. Twelve entities (six naturalized and six casual) are reported in literature and/or well documented by specimens, but they are not quoted in the recent flora of Lazio. Regarding the other 18 taxa, the status of naturalization are pointed out in comparison with the non-native flora of Italy. The exotic species of the Lazio flora are now 324 corresponding to 9,78% with an increas-ing of naturalized (1,74%) and invasive species (0,92%).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.