in taxon starch-producing plant arrowroot plant PLANTS:MAAR3 Arrowroot, any of several species of the genus *Maranta*, members of the family *Marantaceae*, the rhizomes, or rootstocks, of which yield an edible starch. The most commonly used species is *Maranta arundinacea*, the source of genuine, or West Indies, arrowroot. [https://global.britannica.com/plant/arrowroot] maranta arundinacea Maranta arundinacea requires discussion