 "T. angustifolia" can be distinguished from "T. latifolia" by its narrower leaves and by a clear separation of two different regions (staminate flowers above and pistilate flowers below) on the flowering heads.The species hybridize as "Typha x glauca" ("Typha angustifolia x T. latifolia") (white cattail); "Typha x glauca" is not a distinct species, but is rather a sterile F1 hybrid.Broadleaf cattail is usually found in shallower water than narrowleaf cattail.