Microsoft MCDBA Certification Exam 70-290
Acer negundo is often discussed as being comprised of three subspecies, each of which was originally described as a separate species. These are: * A. negundo subsp. negundo is the main variety and the type to which characteristics described in the article most universally apply. Its natural range is from the Atlantic Coast to the Rocky Mountains. * A. negundo subsp. interius has more leaf serration than the main species and a more matte leaf surface.Testking 70-290 As the name interus indicates, its natural range of Saskatchewan to New Mexico is sandwiched between that of the other two subspecies. * A. negundo subsp. californicum has larger leaves than the main species. Leaves also have a velvety texture which is essential to distinguish it from A. negundo subsp. negundo. It is found in parts of California and Arizona. Some authors further subdivide subsp. negundo into a number of regional varieties but these intergrade and their maintenance as distinct taxa is disputed by many. Even the differences between recognized subspecies are probably a matter of gradient speciation Finally, note that a few botanists treat Boxelder Maple as its own distinct genus (Negundo aceroides) but this is not widely accepted.Although its weak wood, irregular form, and prolific seeding might Testking 70-271 make it seem like a poor choice for a landscape tree, A. negundo is one of the most common maples in cultivation and many interesting cultivars have been developed, including: * 'Auratum' - yellowish leaves with smooth undersides * 'Aureomarginatum' - creamy yellow leaf margins * 'Baron' - Hardier & seedless variety * 'Elegans' - distinctively convex leaves * 'Flamingo' - pink and white variegation (very popular) * 'Variegatum' - creamy white leaf margins * 'Violaceum' - younger shoots and branches have bluish colour Although native to North America, it is considered an invasive species in some areas of that continent. It can quickly colonize both cultivated and uncultivated areas and it has become naturalized in eastern China. The range is therefore expanding both in North America and elsewhere. It can also be found in some of the cooler areas of the Australian Continent where it is listed as a pest invasive species. Although its light, close-grained, and soft wood is considered undesirable for most uses, this tree has been considered as a commercial source of wood fibreAlthough its weak wood, irregular form, and prolific seeding might make it seem like a poor choice for a landscape tree, A. negundo Testking 70-236 is one of the most common maples in cultivation and many interesting cultivars have been developed, including: * 'Auratum' - yellowish leaves with smooth undersides * 'Aureomarginatum' - creamy yellow leaf margins * 'Baron' - Hardier & seedless variety * 'Elegans' - distinctively convex leaves * 'Flamingo' - pink and white variegation (very popular) * 'Variegatum' - creamy white leaf margins * 'Violaceum' - younger shoots and branches have bluish colour Although native to North America, it is considered an invasive species in some areas of that continent. It can quickly colonize both cultivated and uncultivated areas and it has become naturalized in eastern China. The range is therefore expanding both in North America and elsewhere. It can also be found in some of the cooler areas of the Australian Continent where it is listed as a pest invasive species. Although its light, close-grained, and soft wood is considered undesirable for most uses, this tree has been considered as a commercial source of wood fibre