I assume it is Latin.
"Although the pathogen was initially thought to be Puccinia hemerocallidis Thuem., some inconsistencies in spore morphology with the original literature description were uncovered, namely the predominance of one-celled teliospores (mesospores) and thin urediospore walls. While the taxonomic significance of these features was being further evaluated, plant pathologists agreed to assign a provisional name of
Puccinia sp. to the pathogen until comparisons were made between specimens of daylily rust from locations in the
southeastern US and voucher specimens of other rusts on plants in the Liliaceae. That comparison has been completed,
and the consensus is that P. hemerocallidis is the proper name for the rust pathogen recently discovered in the Southeast
US. "
https://www.fdacs.gov/content/...
