“…According to published chromosome counts and anecdotal information, the ploidy level of C. americana is uncertain. Studies report that C. americana is either diploid (haploid chromosome number n ¼ 17; Rogers, 1965), tetraploid (n ¼ 29; Gadella, 1964), or hexaploid (n ¼ 51; Sugiura, 1942). A base chromosome number of 17 is common in the genus Campanula (Gadella, 1964).…”