Table 2.

Examples of ‘Candidatus’ names proposed in the literature that do not comply with the rules and recommendations of the ICNP and its orthography appendix. The examples listed were included in Lists no. 1 and 2 [11,14], and some were discussed in an earlier essay [10]. Note that the suggested alternative names are proposals only and do not exclude other possibilities

Published ‘Candidatus’ name	Reasons why corrections are needed	Relevant rules of the ICNP	Proposed corrected name
Blochmannia	A generic name that exists in botany	Principle 2	Blochmanniella
Brownia	A generic name that exists in zoology	Principle 2	Spencerbrownia
Polytropus	A generic name that exists in zoology	Principle 2	Allopolytropus
Chaer	A name not treated as Latin	Principle 3, Rule 6	Chaera
Uab	A name not treated as Latin	Principle 3, Rule 6	Uabimicrobium
Rohrkolberia	Words from languages other than Latin or Greek should be avoided as long as equivalents exist in Latin or Greek or can be constructed by combining word elements from these two languages	Recommendation 6(3)	Typhincola
Bartonella woyliei	Words from languages other than Latin or Greek should be avoided as long as equivalents exist in Latin or Greek or can be constructed by combining word elements from these two languages	Recommendation 6(3)	Bartonella bettongiae
Pelagibacter ubiquea	The epithet is an adverb and not an adjective or a noun	Rule 12c	Pelagibacter communis
Electronema palustris	The gender of the adjective used as a specific epithet does not agree with the gender of the genus name	Rule 12c(1)	Electronema palustre
Roseovibrio tepidum	The gender of the adjective used as specific epithet does not agree with the gender of the genus name	Rule 12c(1)	Roseovibrio tepidus
Roseilinea gracile	The gender of the adjective used as specific epithet does not agree with the gender of the genus name	Rule 12c(1)	Roseilinea gracilis
Ovatusbacter	The connecting vowel is -i- when the preceding word element is of Latin origin	Appendix 9	Ovatibacter
Liberobacter	The connecting vowel is -i- when the preceding word element is of Latin origin	Appendix 9	Liberibacter
Abyssubacteria	The connecting vowel is -o- when the preceding word element is of Greek origin	Appendix 9	Abyssobacteria
Altiarchaeum	A connecting vowel is dropped when the following word element starts with a vowel	Appendix 9	Altarchaeum
Magnetoovum	A connecting vowel is dropped when the following word element starts with a vowel	Appendix 9	Magnetovum

^aPure cultures of ‘Candidatus Pelagibacter ubique’ have been obtained [23], but no type strain was designated and the organism is not yet available from culture collections.