In response to the first Dutch elm disease (DED) pandemic, Siberian elm, Ulmus pumila,
was planted to replace the native elm, U. minor, in Italy. The potential for hybridization …

Hybridization creates unique allele combinations which can facilitate the evolution of
invasiveness. Frequent interspecific hybridization between the Siberian elm, Ulmus pumila …

Natural hybridization between introduced species and their native congeners occurs
frequently and can create serious conservation concerns. Ulmus pumila (Siberian elm) is an …

Two elm taxa occur naturally in the Iberian Peninsula: the Field elm (Ulmus minor) and the
Wych elm (U. glabra). In addition, a third taxon, the foreign Siberian elm (U. pumila), was …

The enormous losses suffered by the European elms during recent Dutch elm disease
outbreaks led to concern over the conservation of elm genetic resources, and the …

Ulmus pumila is considered an invasive tree in 41 of the United States. In this study, we
examined the extent of hybridization in naturalized populations of U. pumila, its impact on …

The two Dutch elm disease (DED) pandemics that spread across Europe this century have
caused dramatic mortality in elm populations, and the disease still represents a great threat …

American elm (Ulmus americana) is an important cultural and historic symbol of the North
American landscape. Its graceful form and resilience to harsh growing conditions made it …

Elms (Ulmus spp.) were once dominant trees in mixed broadleaf forests of many European
territories, mainly distributed near rivers and streams or on floodplains. Since ancient times …

Abstract Background and Aims Ulmus minor has been severely affected by Dutch elm
disease (DED). The introduction into Europe of the exotic Ulmus pumila, highly tolerant to …