planifilum fulgidum planifilum fulgidum planifilum fulgidum is a gram-positive and thermophilic bacterium from the genus of planifilum which has been isolated from hyperthermal compost in japan. planifilum fulgidum scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: thermoactinomycetaceae genus: planifilum species: p. fulgidum binomial name planifilum fulgidumhatayama et al. 2005 type strain 500275, atcc baa-970, bcrc 16828, ccrc 16828, dsm 44945, jcm 12508