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PPG v2.0.0

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@joelnitta joelnitta released this 15 Sep 01:28
· 8 commits to main since this release
v2.0.0
4a855a8

This is the first release of the official PPG II taxonomic system.

With this release, the data in data/ppg.csv are declared the official Pteridophyte Phylogeny Group II (PPG II) classification for ferns and lycophytes, superseding PPG I (2016). This release accompanies the PPG II publication.

The version number jumps to 2.0.0 to mark this formal declaration, per the project's own versioning policy (see README) — not because of the size of the underlying data changes since the last release, which are in line with routine updates.

DOI: 10.5281/zenodo.22760361

Changes since v0.0.0.9009

  • Row count: 77,702 → 77,808 (+106)
  • 108 taxa added, mostly unchecked species-rank names pending PPG review
    • New genus: Neoschizaea (accepted)
  • 2 taxa removed (both synonym varieties of Mertensia glaucescens)
  • 44 taxonomic status changes, including 17 accepted ↔ synonym flips (e.g. Dennstaedtia, Selaginella apoda, Zealandia powellii newly accepted; Olfersia macrostegia, Cyathea andina, Microsorum powellii newly sunk)
  • 15 scientific name corrections (orthographic fixes, hybrid-marker additions)
  • 190 reclassifications (parent/accepted-usage changes)
  • ~1,860 nomenclatural-citation field updates from a bulk source-citation refresh
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