Contandriopoulos, Quézel et Zaffran claimed that both 2n=16
whereas 't Hart claimed
tymphaeum 2n=14
tristriatum 2n=22, 2n=44
It seems there is a discrepancy in the reported chromosome numbers for the Greek plants Prometheum tymphaeum and Sedum tristriatum.
According to Contandriopoulos, Quézel, and Zaffran, both species have a diploid number (2n) of 16. However, 't Hart reported different numbers: 2n=14 for Prometheum tymphaeum and 2n=22 or 2n=44 for Sedum tristriatum.
Such discrepancies can occur due to various reasons, including differences in the methods used for chromosome counting, natural variations within species, or even errors in reporting. It’s also possible that different subspecies or populations of the same species might have different chromosome numbers.
For the most accurate information, it would be best to refer to the most recent and reliable sources, or to conduct a cytogenetic analysis if possible. Chromosome numbers are a fundamental aspect of plant genetics and can have significant implications for the study of evolution, speciation, and plant breeding.
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