Exotic Brome-Grasses in Arid and Semiarid Ecosystems of the Western US

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Fig. 6.6 Number of species in different categories of human use or cultivar availability in each
section of the Bromus genus, for introduction or impact categories combined ( left panels ) or sepa-
rated ( right panels ). Species may be both widely introduced and weedy and may be included in
multiple weed categories

6 Attributes That Confer Invasiveness and Impacts Across the Large Genus Bromus...