Cinnamon Fern

large fronds, deciduous, sterile fronds are spreading and about 60 cm tall & 18 cm across, pinnate leaves 5–10 cm long and 2–2.5 cm wide, lobed but not quite bipinnate; fertile spore-bearing fronds are erect and shorter, 20–45 cm tall; they become cinnamon-colored, which gives the species its name.