Basket Fern

Drynaria rigidula, commonly known as the "basket fern", belongs to the family Polypodiaceae. The fertile foliage fronds are large and dark green, the smaller brown sterile nest fronds are clustered at their bases. They can be epiphytic (growing on trees) or epipetric (growing on rocks) - in this case, the latter. Easily recognizable by being the only species in the genus with 1-pinnate foliage fronds. The lobes are narrow, taper to a sharp point, and are narrowly-winged at their attachment to the rachis. Sori are arranged in two rows along the primary vein of each lobe. An interesting fact: Drynaria rigidula serve as shelter for a variety of python speecies, most usually in winter. (info sourced from Wiki) PS: I initially thought this spotting was gristle fern (Blechnum cartilagineum), another common species in this area, but as usual, small details make a big difference. Gristle fern leaves are arranged alternately along the stem, but are broadly attached with no tapering. Notice the leave structure in this spotting (3rd photo) - https://www.projectnoah.org/spottings/800525432 Basket fern leaves are very different, although from a distance, they both look similar.