microfungus |
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| navigate by keyword : american attractive autumn bark beetles bronze caused closeup colorful colors comprising decades deciduous died disease dispersed dutch elm elms european fall family flowering genus large leaf leaves mature microfungus nature north origin plant pointed recent red semideciduous serrated species thetinyphotographer toothed tree trees ulmaceae ulmus |
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| Elms are deciduous and semi-deciduous trees comprising the flowering plant genus Ulmus in the plant family Ulmaceae. In recent decades, most mature elms of European or North American origin have died from Dutch elm disease, caused by a microfungus dispersed by bark beetles. |
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