Stems round and smooth, erect, sometimes flexuous, 2 to 3 feet tall, often branched above, leafy; leaves erect, shorter than and chiefly upon the lower part of the stem, somewhat glaucous, one-half to 1 ¼ inches wide; rootstock horizontal, thick, fleshy, covered with the fibrous roots. Flowers several, the perianth consisting of six, clawed segments united below into a tube, the three outer ones dilated, reflexed, violet-blue, variegated with yellow, green and white; crestless, spatulate, 2 to 3 inches long, and wider and longer than the three inner segments; the ovary below the perianth tube, in fruit becoming an oblong, obscurely three-lobed capsule, 1 to 1½ inches long; divisions of the style petallike, arching over the stamens, bearing the stigmas immediately under their two-lobed tips.
In marshes, thickets and wet meadows, common along streams and ponds, Newfoundland to Manitoba, south to Florida and Arkansas.
Memoir 15 N. Y. State Museum
Larger Blue Flag Iris versicolor