xylella fastidiosa
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Subspecies and their host plants:

Listed below are the 4 subspecies identified for Xylella fastidiosa, plus 3 mixed (recombinant) types, and their major host plants.

            XF subspecies fastidiosa:xylella           
             almond          Prunus dulcis
             alfalfa            Medicago sativa
             grape            Vitis vinifera                 

            XF subspecies sandyi:
            oleander         Nerium oleander

            XF subspecies multiplex:
            almond           Prunus dulcis
            oak                 Quercus sp.
            
sweetgum       Liquidambar styraciflua
            redbud           Cercis canadensis
            elm                 Ulmus americana
            peach             Prunus persica
            apricot            Prunus armeniaca
            plum               Prunus domestica

            XF subspecies multiplex (rec type I):
            almond           Prunus dulcis
            plum               Prunus domestica

            XF subspecies multiplex (rec type II):
            blackberry      Rubus sp.

            XF subspecies multiplex (mulberry type):
            mulberry         Morus spp.
                  
            XF subspecies pauca:
            coffee             Coffea sp.
            citrus              Citrus sp.        

For a complete list of X. fastidiosa host plants generated from an exhaustive literature search, please refer to the UC Berkeley Xylella webpage (http://www.cnr.berkeley.edu/xylella/).