yaro

common European arum with lanceolate spathe and short purple spadix; emerges in early spring; source of a starch called arum

a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

a complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles