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It is the primary cause of Cypress canker, a fungal disease that affects various species of trees in the genus Cupressus, including Cupressus sempervirens, the Provence cypress. This disease leads to the decline of infected trees and has led to the destruction of millions in central Italy in particular. [1] [2] It causes branch and trunk cankers.
Cypress canker is a disease affecting Cupressus species, caused by one of several species of fungus in the genus Seiridium. Infection causes die-back of twigs and branches in susceptible cypress trees, [ 1 ] with rapidly increasing amounts of damage and the death of the tree.
Stylized Cypress Trees from Persepolis, Shiraz, Iran. One of the three varieties of C. sempervirens native to Iran is called the Shirazi Cypress. In Persian, C. sempervirens is called the "Graceful Cypress" (sarv-e nāz), and has a strong presence in culture, poetry and gardens.
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Leaves of young cypress trees are spreading and awl-shaped, and are typically small, scale-like formations that tightly adhere to older branches. They are usually aromatic , with glandular pits on the outer surface, and cover the stem in opposite pairs, giving the branchlet a four-sided appearance.
Visit the arboretum any day between 8 a.m.–5 p.m. for a look at these trees in the ground and scan the QR code on the sign identifying the tree to make your purchase.
Butternut canker is a lethal disease of butternut trees, and has no cure.. A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticulture.