holospora holospora holospora is a genus of bacteria. holospora scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria subclass: caulobacteridae order: holosporales family: holosporaceae genus: holospora(ex hafkine 1890) gromov and ossipov 1981 species holospora caryophila (ex preer et al. 1974) preer and preer 1982 holospora elegans (ex hafkine 1890) preer and preer 1982 holospora obtusa (ex hafkine 1890) gromov and ossipov 1981 "candidatus holospora parva" lanzoni et al. 2016 holospora undulata (ex hafkine 1890) gromov and ossipov 1981