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Fraxinus americana, the white ash or American ash, is a fast-growing species of ash tree native to eastern and central North America. White ash trees are threatened by the invasive emerald ash borer .
Fraxinus (/ ˈ f r æ k s ɪ n ə s /), commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, [4] and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous trees, although some subtropical species are evergreen trees. The genus is widespread throughout much of Europe, Asia, and ...
Experiments in Estonia have shown that several North American ash species are susceptible, especially the black ash (Fraxinus nigra), and to a lesser extent the green ash (Fraxinus pennsylvanica). [28] The white ash (Fraxinus americana) and the Asian species known as Manchurian ash (Fraxinus mandschurica) showed only minor symptoms in the study ...
Image of black ash trunk. Tree is located in a seasonally wet, riparian habitat near a small-scale stream. Tree bark is corky and spongy. Black ash is a medium-sized deciduous tree reaching 15–20 metres (49–66 ft) (exceptionally 26 metres (85 ft)) tall with a trunk up to 60 cm (24 inches) diameter, or exceptionally to 160 cm (63 inches).
Fraxinus uhdei, commonly known as tropical ash or Shamel ash, is a species of tree native to Mexico and Central America. [3] It is commonly planted as a street tree in Mexico and the southwestern United States. It has also been planted and spread from cultivation in Hawaii, where it is now considered an invasive species. [3]
Fraxinus pennsylvanica is a medium-sized deciduous tree reaching 12–25 metres (39–82 feet) (rarely to 45 m or 148 ft) tall with a trunk up to 60 centimetres (24 inches) in diameter. The bark is smooth and gray on young trees, becoming thick and fissured with age.
Eucalyptus fraxinoides is a tree that typically grows to a height of 40 m (130 ft) and forms a lignotuber.It has rough, greyish, short fibrous bark on the lower trunk, smooth white, grey or yellow bark with insect scribbles above.
Species of ash galled, include white ash or American ash (Fraxinus americana), narrow-leafed ash (Fraxinus angustifolia & subsp. oxycarpa), Bunge's ash (Fraxinus bungeana), common ash (Fraxinus excelsior), manna ash (Fraxinus ornus), green ash or red ash (Fraxinus pennsylvanica). [6]