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Esimerkit

• In the inner wall facing the aecial cavity, the primary wall materials surrounding the processes disintegrate, partially exposing them.
• Aecial hosts are primarily conifers. Damage to some aecial hosts may also be considered important, as in pine twist rust caused by M.[Melampsora] pinitorqua Rostrup.
• The uredo- and teleuto-stages occur on wheat, barley and some grasses and the pycnidial and aecial stages on species of Berberis and Mahonia, the alternate hosts.