ligniera pilorum ligniera pilorum ligniera pilorum is a plant pathogen infecting wheat. ligniera pilorum scientific classification domain: eukaryota (unranked): sar (unranked): rhizaria phylum: cercozoa class: phytomyxea order: plasmodiophorales family: plasmodiophoraceae genus: ligniera species: l. pilorum binomial name ligniera pilorumfron & gaillat, (1925) synonyms