Clostridiumjosui is the correct name if this species is regarded as a separate species within a separate genus Clostridium.
The type FERM P-9684 is a patent strain.Publication:
Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73.