Acorus americanus

Acorus americanus

Acorus americanus (Raf.) Raf.
Engl.: American sweetflag, sweetflag.
Deu.: Amerikanischer Kalmus.
Fran.: acore d'Amérique, belle-angélique d'Amérique.
Bot. syn.: Acorus calamus auct. non L., Acorus calamus L. var. americanus (Raf.) H. D. Wulff.

I have no articles for this botanical term, but there might be some for the next level down (if found).