Wild iris, Blue Flag, Iris versicolor. L., often grows with cattails.  Early growth can be confused with cattails.  Cattails have a rounded leaf stalk and no purple color.  Iris leaf stalk is flattened and as it matures is blushed with purple. Medicinal uses: as a poultice over bruises, edema, open sores, to treat arthritis.  Root tea cleansing purgative in small amounts.  Homeopathic uses abound to treat:  emetic, diuretic, cathartic and as a treatment for migraines.

Not edible!  See more poisonous plants

Photo shows problem:  Iris growing amidst cattails.  The bloom helps you discover the toxic plant.  Note:  leaf in left foreground is cattail leaf, whereas sheath of leaves (purple tinted) to right of bloom in shadow is flattened iris leaves.

Native American Medicine: Root used as a dressing or poultice to treat sores, tuberculosis, burns,  wounds, edema, scrofula, to treat arthritis, rheumatism, to treat blood poisoning.  Root a analgesic, purgative and cathartic..  Root blended with Hydrangea arborescens decocted and used to treat gallstones.  Antidotal use to treat cholera

For modern Native American Medicine uses of North American plants see our video of the same title.