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  1. Incertae sedis ( Latin for 'of uncertain placement') [2] or problematica is a term used for a taxonomic group where its broader relationships are unknown or undefined. [3] Alternatively, such groups are frequently referred to as "enigmatic taxa". [4] In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by ...

  2. In taxonomy, the term incertae sedis (abbreviated inc. sed.) is used for a taxon when its broader relationship to other taxa is unknown. The first person who used the term in botany was probably Antoine-Laurent de Jussieu. In his book Genera Plantarum of 1789 he listed a few plantae incertae sedis. Reasons why a taxon might be classified as ...

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  4. Feb 21, 2024 · Incertae sedis ( Latin for 'of uncertain placement') [2] or problematica is a term used for a taxonomic group where its broader relationships are unknown or undefined. [3] Alternatively, such groups are frequently referred to as "enigmatic taxa". [4] In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by ...

  5. Noun [ edit] incertae sedis. ( taxonomy) A term applied to a taxon or group of taxa whose relationship with others is unknown or undecided. The placement of the genus Dipentodon? Well, in the APG II (2003) system it is listed as incertae sedis.

  6. The fossil plant Paradinandra suecica could not be assigned to any family, but was placed incertae sedis within the order Ericales when described in 2001. [5] The fossil Gluteus minimus, described in 1975, could not be assigned to any known animal phylum. [6] The genus is therefore incertae sedis within the kingdom Animalia.

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