roseomonas hibiscisoli roseomonas hibiscisoli roseomonas hibiscisoli is a species of gram negative, strictly aerobic, coccobacilli-shaped, pink-colored bacteria. it was first isolated from the rhizosphere of a hibiscus syriacus plant, and the new species was proposed in 2017. the species name derives from the hibiscus plant from which it was first isolated. roseomonas rhizosphaerae was also previously isolated from the rhizosphere of a plant. roseomonas hibiscisoli scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: roseomonas species: r. hibiscisoli binomial name roseomonas hibiscisoliyan 2017 the optimum growth temperature for r. hibiscisoli is 28 °c, but can grow in the 20-40 °c range. the optimum ph is 7.0, and can grow in ph 5.0-9.0.