Where does “Pteridales” come from?

Pteridales (Translingual) comes from Translingual Pteris, from Ancient Greek πτέρῐς, from English pteron, from Ancient Greek πτερόν, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

Pteridales (Translingual): order}}

Definitions

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Ancestry of “Pteridales”, step by step

Step	Language	Word	Meaning
1	Translingual	Pteris	genus
2	Ancient Greek	πτέρῐς	male fern
3	English	pteron	A peristyle raised on a podium, differing from an...
4	Ancient Greek	πτερόν	feather; wing; Any winged creature
5	Proto-Indo-European	péth₂r̥	wing; feather
6	Proto-Indo-European	peth₂-	to spread out; to fly

Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Ancient Greek πτερόν →