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Mahonia typically have large, pinnate leaves 10–50 cm long with 5-15 leaflets, and flowers in racemes (5–20 cm long). Botanists disagree on the acceptability of the genus name Mahonia. Several authorities argue plants in this genus should be included in the genus Berberis because several species in both genera are able to hybridize, and because when the two genera are looked at as a whole, there is no definite morphological separation.
Cedar Falls urban park
Some people now consider these invasive plants in our area