Info: Entire plant / May 13, 2023 / Southern Pines, NC (Boyd House garden) / License: All rights reserved
Caption: Yellow Flag Iris # 219 nn; RAB p. 1183,53-5; AG p. 513, 113-1; LHB page 273, 37-2-31, "Greek for rainbow alluding to colors of the species."Specific epithet means false Acorus as the rhizomes resemble those of Acorus."