Where does “Viridiplantae” come from?

Viridiplantae (Translingual) comes from Latin viridis, from Latin vireō, from Latin -idae.

Ancestry of “Viridiplantae”, step by step

Step	Language	Word	Meaning
1	Latin	viridis	green; young, fresh, lively, youthful
2	Latin	vireō	—
3	Latin	-idae	—

Viridiplantae — Etymology, Origin & Word History | Etymology Explorer