Back Grupa za filogeniju pteridofita BS Systém PPG I Czech Pteridophyte Phylogeny Group French Pteridophyte Phylogeny Group ID PPG I Japanese Pteridophyte Phylogeny Group Dutch Grupo de Filogenia das Pteridófitas Portuguese Systém PPG I Slovak
The Pteridophyte Phylogeny Group (PPG) is an informal international group of systematic botanists who collaborate to establish a consensus on the classification of pteridophytes (lycophytes and ferns) that reflects knowledge about plant relationships discovered through phylogenetic studies. In 2016, the group published a classification for extant pteridophytes, termed "PPG I". The paper had 94 authors (26 principal and 68 additional).[1]
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