Willdenowia 37 – Article37203

Willdenowia – Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem
ISSN 0511-9618
© 2007 BGBM Berlin-Dahlem.

Verloove, F. & Reynders, M. 2007: Studies in the genus Paspalum (Paniceae, Poaceae) in Europe – 2. The Quadrifaria group.
Willdenowia 37: 423-430.
doi:10.3372/wi.37.37203

Abstract
The South American Paspalum quadrifarium has been reported as a naturalized xenophyte in Tuscany and Liguria, Italy, since at least the 1960s. In the present contribution the discovery of the closely related P. exaltatum, also of South American origin, in Liguria, Italy, is reported. These are the only known occurrences in Europe of both species, which are very similar to each other and likely to be confused. In the present paper their diagnostic features are discussed and original line drawings and SEM photographs for both taxa are presented. Their current distribution in Italy is shown and some ecological remarks are added.

Key words
Paspalum quadrifarium, Paspalum exaltatum, xenophyte, Italy, taxonomy, distribution.

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