Plant taxonomy - gymnosperms?

In iNaturalist plant taxonomy, there is flowering plants (Angiosperm), I’m wondering why its peer, Gymnosperms (which would cover Conifers, Ginkgos, etc.), is not there.

I’m just curious: there’s probably some good reason.

Thanks!

conifers: https://www.inaturalist.org/taxa/136329-Pinopsida
gingkos: https://www.inaturalist.org/taxa/151882-Ginkgoopsida

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There is no single accepted scientific name for the group colloquially known as gymnosperms.

https://en.wikipedia.org/wiki/Gymnosperm

The clade names in Wikipedia are not accepted scientific names

Gymnosperms are a paraphyletic group, like jawless fishes and prototherian mammals. ;D

For serious though, this paraphyly is kind of trivial, as modern gymnosperms (acrogymnosperms), modern jawless fishes (cyclostomes), and modern prototherians (monotremes) are all clades.

Confusingly, it appears that the taxon name Gymnospermae or Acrogymnospermae may be used for acrogymnosperms specifically.

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List of gymnosperm classes

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