Iris ( Blue Zephyr Iris )
Rhizomatous irises have rhizomes as rootstock , close to or on the airfoil , or just below ground - level , which produce linear to steel - forge leaves , nearly always in basal rooter , and simple or branched flower stems . The efflorescence have 3 good petals , called touchstone , and 3 large , pendent or distribute petal , called fall . Siberian irises lack the “ beard ” of colored whisker at the base of each fall that other iris group have ....