Where does “branĉaro” come from?
branĉaro (Esperanto) comes from Esperanto -aro, from Russian -а́рь, from Proto-Slavic -ařь, from Gothic -𐌰𐍂𐌴𐌹𐍃, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios.
branĉaro (Esperanto): network of branches
Ancestry of “branĉaro”, step by step