NCBI
NCBI Taxonomy taxdump · 2026-10-23taxid: 1656
Bacteria > Actinomycetota > Actinomycetes > Actinomycetales > Actinomycetaceae > Actinomyces > Actinomyces viscosus
Actinomyces viscosus
Species in genus Actinomyces, family Actinomycetaceae (order Actinomycetales). (from NCBI Taxonomy lineage)
Names over time
Loading the names
Cross-database view
GTDB
Actinomyces viscosus
id: s__Actinomyces viscosus · GTDB R232
Database's species id. At its weakest, linked by GTDB's own NCBI species id rather than the genome's raw one.
d__Bacteria;p__Actinomycetota;c__Actinomycetes;o__Actinomycetales;f__Actinomycetaceae;g__Actinomyces;s__Actinomyces viscosus
Renamed: GTDB gives this taxon a different name in R207, R214, R220, R226, R232.
SILVA
Actinomyces viscosus
id: AF543286 · SILVA 138.2
Walked up to species. At its weakest, linked by walking up 1 level from a strain or subspecies record to the species.
Bacteria;Actinomycetota;Actinobacteria;Actinomycetales;Actinomycetaceae;Actinomyces;
Greengenes2
Actinomyces oris_A
id: Actinomyces oris_A · Greengenes2 2024.09
Genome accession. Linked via GTDB R220 genome accessions — the same physical genomes, not a name match.
d__Bacteria; p__Actinomycetota; c__Actinomycetes; o__Actinomycetales; f__Actinomycetaceae; g__Actinomyces; s__Actinomyces oris_A
Only 1 genome — below the threshold for detecting a split, so “current” here means unverified, not confirmed.
Renamed: Greengenes2 gives this taxon a different name in 2022.10, 2024.09.
eHOMD
Release 4.2Actinomyces viscosus
id: HMT-688 · eHOMD 4.2
Exact taxid. Linked by NCBI taxid — eHOMD records the same id NCBI does.
Bacteria;Actinomycetota;Actinomycetes;Actinomycetales;Actinomycetaceae;Actinomyces
Only 1 genome — below the threshold for detecting a split, so “current” here means unverified, not confirmed.
Each panel shows one release. Switch a release to see how that database's answer changes — the taxon is held fixed by NCBI taxid, so every panel describes the same organism. Each panel also says how it was linked; how the databases are joined explains the routes.
Lineage by rank
| Rank | NCBI | GTDB R232 | SILVA 138.2 | Greengenes2 2024.09 | eHOMD 4.2 |
|---|---|---|---|---|---|
| domain | Bacteria | Bacteria | Bacteria | Bacteria | Bacteria |
| phylum | Actinomycetota | Actinomycetota | Actinomycetota | Actinomycetota | Actinomycetota |
| class | Actinomycetes | Actinomycetes | first rank that differs from NCBI: Actinobacteria | Actinomycetes | Actinomycetes |
| order | Actinomycetales | Actinomycetales | Actinomycetales | Actinomycetales | Actinomycetales |
| family | Actinomycetaceae | Actinomycetaceae | Actinomycetaceae | Actinomycetaceae | Actinomycetaceae |
| genus | Actinomyces | Actinomyces | Actinomyces | Actinomyces | Actinomyces |
| species | Actinomyces viscosus | Actinomyces viscosus | — | first rank that differs from NCBI: Actinomyces oris_A | — |
Each column is the release its box shows. marks the first rank at which a database's name differs from NCBI's, by exact text; a suffix such as _A counts. SILVA's path and eHOMD's columns end at genus, so their species row is blank; the box above names the species. Levels a source labels outside these seven ranks are in the API's ranks and not drawn here.
Names in NCBI
from NCBI Taxonomy taxdump · 2026-10-23- Actinomyces viscosuscurrent
- Odontomyces viscosussynonym
Other names in these databases
GTDB R232
- Actinomyces viscosus
- AAA044-D11 sp009705075
- AAA044-D11 sp009726125
- Actinomyces oris
- Actinomyces oris_A
- Actinomyces sp915069725
- CAIUKX01 sp943326975
- CANHVK01 sp943324745
- JADJPG01 sp943332515
- Mxb001 sp903954205
SILVA 138.2
- Actinomyces viscosus
- Actinomyces viscosus C505