Where does “Ricinetum” come from?

Ricinetum (Latin) comes from Latin ricinus, from Proto-Indo-European rik- — nit.

Ancestry of “Ricinetum”, step by step

Step	Language	Word	Meaning
1	Latin	ricinus	tick; castor oil plant, "Ricinus"; mulberry seeds
2	Proto-Indo-European	rik-	nit

Ricinetum — Etymology, Origin & Word History | Etymology Explorer