Jesse Czekanski-Moir#FernFriday: There are a few epiphytes on this tree trunk in #Ngeremlengui #Palau but the most abundant plants you can see are the one-cell thick (except for the vascular tissue) fronds of Crepidomanes (Hymenophyllaceae)
The "species" is probably C. minutum, but according to @joelnitta et al., this is a species complex with lots of tricky evolutionary stuff happening
https://bsapubs.onlinelibrary.wiley.com/doi/full/10.3732/ajb.1000484