Task: Explanation
Input (English): Mahonia is a genus of about 70 species of evergreen shrubs in the family Berberidaceae, native to eastern Asia, the Himalaya, North America, and Central America. They are closely related to the genus "Berberis". 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 consistent morphological separation except simple vs compound leaves. "Mahonia" typically have large, pinnate leaves 10–50 cm long with five to fifteen leaflets, and flowers in racemes which are 5–20 cm long. Question: Between Exacum and Mahonia, which plant genus has about 70 species? Answer: Mahonia
Output (English): Mahonia is a genus of about 70 species of evergreen shrubs in the family Berberidaceae, native to eastern Asia, the Himalaya, North America, and Central America.