Pyrrosia tricuspis is an evergreen perennial fern plant growing
on rocks or trunks with approximately 4mm long rhizomes. Leaves,
measuring 5-15cm in length, 3.5-12cm in width, are split into three
leaflets in a hastate way. Sporangia run in rows along each vein on
the bottom side of the leaves. When dried up or in wintertime, the
leaves wrap up themselves inside.