Intrasporangium
genus of bacteria
Intrasporangium is a genus of Gram positive, nonmotile bacteria. The genus name refers to the mycelium of the type strain forming intercalary vesicles that were originally identified as spores. However, no spores have been observed in later studies. The family Intrasporangiaceae is named after the genus, and Intrasporangium is the type genus for the family.
The genus was first proposed in 1967. The type species I. calvum was first isolated from air in a school dining room in the Soviet Union. The genus was monospecific until 2012, when three species were added to the genus. I. chromatireducens and I. mesophilum were proposed as new species, and the monospecific Humihabitans oryzae was reclassified as I. oryzae. The novel genus and species Monashia flava was proposed in 2016, but was later found to be a member of Intrasporagium, most likely a strain of I. oryzae. The genus is currently defunct.
Begin with the source’s own compact description: “Intrasporangium” is genus of bacteria. The dossier treats that line as a proposition to test through Intrasporangium, genus and bacteria, not as a finished interpretation.
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The phrase “genus of bacteria” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated May 21, 2026. The linked authority identifier is Q21216926. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1967, 2012 and 2016.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Intrasporangium” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.