Subspecies epithets whose last component is a present participle (usually ending in -ens or -ans) can be in any gender. They are treated like Group B adjectives and belong to the third declension. The actual gender is determined by the gender of the genus name [Rule 12c (1), Rule 13b]. A list of epithets formed in that manner is provided below. Genus names and species names derived from present participles are not listed here. A special case is genes, which originally is an Ancient Greek suffix meaning "born from" but is nowadays mainly used as a Neolatin suffix meaning "producing". See also the LPSN introductory page on forming names.
In the case of a ☞ new combination these epithets must not be adapted to the gender of the genus name. This is a special case of Group B adjectives.
Acetobacter aceti subsp. liquefaciens — Adlercreutzia equolifaciens subsp. equolifaciens — Corynebacterium flaccumfaciens subsp. flaccumfaciens — "Enterococcus faecalis subsp. liquefaciens" — Lactobacillus kefiranofaciens subsp. kefiranofaciens — Leucobacter celer subsp. astrifaciens — Mesoflavibacter zeaxanthinifaciens subsp. zeaxanthinifaciens — "Moraxella lacunata subsp. liquefaciens" — Paenibacillus larvae subsp. pulvifaciens — Pseudomonas chlororaphis subsp. aureofaciens — Streptomyces griseus subsp. solvifaciens
Acetobacter xylinum subsp. sucrofermentans — Acetobacter xylinus subsp. sucrofermentans corrig. — Corynebacterium afermentans subsp. afermentans — Paraclostridium bifermentans subsp. bifermentans — Streptomyces cinereoruber subsp. fructofermentans
"Acetilactobacillus jinshanensis subsp. aerogenes" — Aeromonas salmonicida subsp. achromogenes — Azotobacter nigricans subsp. achromogenes — Beijerinckia indica subsp. lacticogenes — Fibrobacter succinogenes subsp. succinogenes — Gluconobacter oxydans subsp. melanogenes — "Lysobacter enzymogenes subsp. enzymogenes" — Pantoea stewartii subsp. indologenes — Saccharothrix aerocolonigenes subsp. aerocolonigenes — Staphylococcus hyicus subsp. chromogenes — Streptomyces achromogenes subsp. achromogenes — Streptosporangium amethystogenes subsp. amethystogenes
Photorhabdus heterorhabditis subsp. aluminescens — Photorhabdus luminescens subsp. luminescens — Photorhabdus luminescens subsp. luminescens
Achromobacter xylosoxidans subsp. denitrificans — Alcaligenes denitrificans subsp. denitrificans — Alcaligenes xylosoxidans subsp. denitrificans
Alcaligenes denitrificans subsp. xylosoxydans — "Burkholderia kururiensis subsp. thiooxydans" — Gluconobacter oxydans subsp. oxydans — Gluconobacter oxydans subsp. suboxydans
Geobacter sulfurreducens subsp. sulfurreducens — Leucobacter chromiireducens subsp. chromiireducens — Neisseria elongata subsp. nitroreducens
"Brachybacterium halotolerans subsp. halotolerans" — Hyphomicrobium facile subsp. tolerans corrig. — Hyphomicrobium facilis subsp. tolerans — Lacticaseibacillus paracasei subsp. tolerans — Lactobacillus casei subsp. tolerans — Lactobacillus paracasei subsp. tolerans — "Lactobacillus viridescens subsp. halotolerans" — "Sulfobacillus thermosulfidooxidans subsp. thermotolerans"
Geobacillus subterraneus subsp. aromaticivorans — Pseudomonas oleovorans subsp. oleovorans — Sphaerotilus natans subsp. sulfidivorans — "Thermoanaerobacter thermohydrosulfuricus subsp. carboxydovorans"