Microsorum

Microsorum is a genus of ferns in the family Polypodiaceae, subfamily Microsoroideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The species are tropical. Like most ferns, they grow from rhizomes, rather than roots. The genus name is often misspelled "Microsorium" or "Microsoreum". It includes some species that are lithophytic rheophytes.
Taxonomy.
The genus "Phymatosorus" is included in "Microsorum" in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). , both the "Checklist of Ferns and Lycophytes of the World" and "Plants of the World Online" kept "Phymatosorus" separate. A 2019 molecular phylogenetic study of the subfamily Microsoroideae did not distinguish "Phymatosorus" from "Microsorum", and suggested that the genus as there circumscribed was sister to "Leptochilus", together forming one of the three main clades in the subfamily:
Species.
, the "Checklist of Ferns and Lycophytes of the World" recognized the following species, either in "Microsorum" or in "Phymatosorus" with a synonym in "Microsorum" (marked "[P]" in the list).
Species placed elsewhere by the "Checklist of Ferns and Lycophytes of the World" include: