A plant does not need flowers

Ferns reproduce through spores, without flowers. The University of Évora describes the sori and spores of Asplenium onopteris, associated with damp, shady places including cracks in rocks and walls. Its fronds are evergreen. The local observation below shows the plant’s appearance; the explanation of reproduction comes from the botanical profile.

A fern leaf is called a frond. For this species, the profile describes evergreen fronds between ten and fifty centimetres long, with a blade cut into successive divisions. The dark stalk that joins the blade to the base can be as long as the blade itself. These are general botanical features, not measurements taken from the local photograph.

Sori are groups of spore-producing structures. In Asplenium onopteris they are described as elongated or linear, with a covering called an indusium. This differs from a flower or fruit: finding no flowers on a fern does not mean it is not reproducing. The available photograph may not show these details either.