Sword Acorus Resources A material used for Resonator Ascension.

A tall flower with a firm stem, crowned by delicate flowers. Sword Acoruses are often used by instructors to teach swordsmanship to young nobles, replacing real swords with these harmless blooms. The children, entranced by the beauty and fragrance, find their attention captured far more easily than by cold, menacing blades.
Sources
Collection Spots
Overworld Collection