NCBI
NCBI Taxonomy taxdump · 2026-10-23taxid: 1750
Bacteria > Actinomycetota > Actinomycetes > Propionibacteriales > Propionibacteriaceae > Arachnia > Arachnia propionica
Arachnia propionica
Species in genus Arachnia, family Propionibacteriaceae (order Propionibacteriales). (from NCBI Taxonomy lineage)
Names over time
Loading the names
Cross-database view
GTDB
Arachnia propionica
id: s__Arachnia propionica · 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__Propionibacteriales;f__Propionibacteriaceae;g__Arachnia;s__Arachnia propionica
SILVA
Pseudopropionibacterium propionicum
id: AJ003058 · 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;Propionibacteriales;Propionibacteriaceae;Cutibacterium;
Renamed: SILVA gives this taxon a different name in 132, 138, 138.1, 138.2, 144.
Greengenes2
Arachnia rubra
id: Arachnia rubra · 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__Propionibacteriales; f__Propionibacteriaceae; g__Arachnia; s__Arachnia rubra
Renamed: Greengenes2 gives this taxon a different name in 2022.10, 2024.09.
eHOMD
Release 4.2Arachnia propionica
id: HMT-739 · eHOMD 4.2
Exact taxid. Linked by NCBI taxid — eHOMD records the same id NCBI does.
Bacteria;Actinomycetota;Actinomycetes;Propionibacteriales;Propionibacteriaceae;Arachnia
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 | Propionibacteriales | Propionibacteriales | Propionibacteriales | Propionibacteriales | Propionibacteriales |
| family | Propionibacteriaceae | Propionibacteriaceae | Propionibacteriaceae | Propionibacteriaceae | Propionibacteriaceae |
| genus | Arachnia | Arachnia | Cutibacterium | Arachnia | Arachnia |
| species | Arachnia propionica | Arachnia propionica | — | first rank that differs from NCBI: Arachnia rubra | — |
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- Arachnia propionicacurrent
- Arachnia propionica (Buchanan and Pine 1962) Pine and Georg 1969 (Approved Lists 1980)synonym
- Propionibacterium propionicussynonym
- Pseudopropionibacterium propionicumsynonym
Other names in these databases
GTDB R232
- Arachnia propionica
- Arachnia propionica_C
- Arachnia propionica_A
- Arachnia propionica_B
- Arachnia rubra
- Arachnia sp013333945
SILVA 138.2
- Pseudopropionibacterium propionicum
- Pseudopropionibacterium propionicum F0230a
- Propionibacterium propionicum NBRC 14587