Sporangium Exposure and Spore Release in the Peruvian Maidenhair Fern (Adiantum peruvianum, Pteridaceae)
Fig 1
False indusia on A. peruvianum.
(A) A leaflet with several pinnules. (B) The false indusia are being developed on the underside of the pinnule. Several developmental stages of false indusia (note the colors) are shown. The lamina of older pinnules with open false indusia shows signs of degradation (lowermost image). (C) Mature false indusia open completely by desiccation and the exposed sporangia release their spores.