Where does “ferulaceus” come from?

ferulaceus (Latin) comes from Latin ferula, from Latin ferire, from Latin ferio, from Proto-Indo-European bʰer- — to bear, carry.

Ancestry of “ferulaceus”, step by step

Step	Language	Word	Meaning
1	Latin	ferula	cane; giant fennel or its stalk; vocative...
2	Latin	ferire	present active infinitive of feriō; second-person...
3	Latin	ferio	I hit, I strike, I smite, I beat, I knock; I cut,...
4	Proto-Indo-European	bʰer-	to bear, carry