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Ptelea trifoliata, commonly known as common hoptree, [4] wafer ash, [5] stinking ash, [6] [7] and skunk bush, [7] [8] is a species of flowering plant in the citrus family . It is native to North America, where it is found in Canada, Mexico, and the United States. It is a deciduous shrub or tree, [9] [10] with alternate, trifoliate leaves.
Zanthoxylum americanum, the common prickly-ash, common pricklyash, common prickly ash or northern prickly-ash (also sometimes called toothache tree, yellow wood, or suterberry), is an aromatic shrub or small tree native to central and eastern portions of the United States and Canada.
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 angustifolia subsp. angustifolia has become a weed in many parts of Australia, where it is known as Desert Ash. It has been widely planted as a street and park tree, and has spread to native bushland and grasslands, as well as stream banks and drainage lines, out-competing native plants for moisture, light and nutrients. [7] [8]
Hymenoscyphus fraxineus is an ascomycete fungus that causes ash dieback, a chronic fungal disease of ash trees in Europe characterised by leaf loss and crown dieback in infected trees. The fungus was first scientifically described in 2006 under the name Chalara fraxinea .
Green ash is also vulnerable to many other diseases including ash yellows, ash dieback and ash bacterial canker that can cause gradual loss of vigor and exhibit similar symptoms to emerald ash borer infestation such as crown dieback, bark cracking, and epicormal sprouts. These conditions are most common on stressed trees in areas of poor soil ...
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Fraxinus albicans, commonly called the Texas ash, [1] is a species of tree in the olive family . It is native to North America, where it is found from eastern Texas and southern Oklahoma in the United States, to the state of Durango in Mexico. [2] [3] Its natural habitat is in dry, rocky slopes, often over limestone. [4]