My research indicates that there is no such thing as a "box elder virus". There is a box elder bug, so named because it is attracted to the box elder tree. In normal concentrations, it poses no danger to the tree, its wood or to human health. It is simply a nuisance. http://www.entomology.cornell.edu/public/IthacaCampus/ExtOutreach/DiagnosticLab/Factsheets/Boxelder.html
The box elder tree is not named after the box elder bug. The trees in question (Acer negundo) receive their name from the similarity of their white wood to that of a boxwood and of their pinnately compound foliage to that of an elder. The name-saking serves the other way around, with the insects in question (Boisea trivittata) being linked with their favorite food source.
The duration of Box Elder - film - is 1.52 hours.
Box Elder News Journal was created in 1893.
Box Elder High School was created in 1894.
Box Elder - film - was created on 2008-03-03.
the box juveniles
The division of trees into hardwood and softwood by a botanic measure is misleading. e.g. balsa is a hardwood! This old style division is in fact based on the seed reproduction - flowering or coniferous. A better descriptor is angiosperm or gymnosperm. Gymnosperm have 'naked' seeds - your conifers. And directly to your question, as a flowering tree, box elder is an angiosperm - or hardwood in the obsolete naming.
Box Elder (Bug and Tree) I went to Box Elder High School. :-)
As of 2000 the population of Box Elder County Utah was, 42,745 people.
Box Elder bugs eat flowers, leaves, and maybe apples. You would have to try that at home.
The total area of Box Elder County Utah is 5,724 sq mi, (14,825 km²)