Miscanthus× ogiformis is a hybrid between Miscanthus sacchariflorus and Miscanthus <br />
sinensis and its several synonyms indicate the insufficient understanding of the <br />
morphological variation of its awn on the spikelet, which is a key characteristic for identifying <br />
Miscanthus species. In the present study, all the Miscanthus specimens in 19 herbaria were <br />
examined in order to find new localities for Miscanthus× ogiformis. Thirty-nine Miscanthus× <br />
ogiformis specimens appeared to be naturally occurring hybrids, as their callus hair length, <br />
awn length, and callus-to-spikelet ratio differed from those found in the parental species. <br />
Therefore, new Miscanthus× ogiformis individuals with morphological variations are likely to <br />
be discovered and these strains might be useful as new genetic resources for this biomass <br />
crop.