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Type: Article
Published: 2015-09-02
Page range: 232–246
Abstract views: 17
PDF downloaded: 2

A taxonomic survey of the genus Vitis L. (Vitaceae) in Italy, part II: the ‘Euro-American’ hybrids

Department of Earth and Environmental Sciences, University of Pavia, Italy
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Nicola M.G. Ardenghi

 


Sezione di Botanica, Museo di Storia Naturale di Milano, Corso Venezia 55, 20121 Milano, Italy
Sezione di Botanica, Museo di Storia Naturale di Milano, Corso Venezia 55, 20121 Milano, Italy
alien species Italy nothotaxa seed morphology systematics Vitis Eudicots

Abstract

New names are assigned to two ‘Euro-American’ nothospecies of Vitis originating from the artificial crossing of Euro-Mediterranean V. vinifera with two American species, employed both as rootstocks and for wine production, and spontaneously occurring in Italy and other European countries: V. ×bacoi (= V. riparia × V. vinifera) and V. ×goliath (= V. riparia × V. rupestris × V. vinifera). Original and detailed descriptions, illustrations and information on distribution and ecology are provided, along with an updated identification key. Late-season leaf pigmentation, presence/absence of phylloxera galls, ripe berries flavor, and seed morphology proved to be useful characters for the identification of the treated species and nothospecies. Nomenclatural aspects regarding V. riparia × V. vinifera are also discussed.