Description
Drynaria roosii is an epiphytic (growing on trees) or epipetric (growing on rocks) plant. Like other species of Drynaria, they possess two frond types – a fertile foliage frond and a sterile nest frond.
Sterile nest fronds are rounded shallowly-lobed reddish-brown fronds overlapping each other. They bear no sori and form a 'basket' characteristic of the genus. The fertile fronds are larger and deeply lobed. They bear 1 to 3 sori arranged on both sides of the central rib.
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