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Idiograms with physical location of repetitive segments in Cestrum capsulare (A), C. corymbosum (B), C. laevigatum (C) and C. megalophylum (D). Numbers below the idiograms correspond to arm ratios, according to Guerra (1986): metacentric (m) with arm ratios (ar) from 1.00 to 1.49, submetacentric (sm) with ar from 1.50 to 2.99, acrocentric (a) with ar > 3.0.
