Like most members of Pteridaceae, they have marginal sori protected by a false indusium formed from the reflexed leaf margin.
12.
This fern has leaves on long sori over which the edges of the leaf are folded to form a false indusium.
13.
The sori are round, and are found on veins ending in the false indusium, below the veins'ends.
14.
Some species have an " indusium ", a net-like structure that extends from the cap to the ground.
15.
They typically have a creeping or erect rhizome and leaves that are sori protected by a false indusium formed from the reflexed margin of the leaf.
16.
The species differ in the presence or absence of an indusium covering each of their proliferate by vegetative buds ( leaf buds ) at the apex.
17.
"Phallus multicolor " is similar in overall appearance, but it has a more brightly coloured cap, stem and indusium, and it is usually smaller.
18.
In some species, they are protected during development by a scale or film of tissue called the "'indusium "', which forms an umbrella-like cover.
19.
The cap of the Indo-Pacific species " P . duplicatus " has a smaller indusium that hangs from the bottom of the cap, and sometimes collapses against the stalk.
20.
Such a feature is strongly at odds with most pteridoid ferns ( Pteridaceae ), which typically have linear marginal sori with an indusium, and sometimes protected with a reflexed leaf tissue margin.
