Dasygrammitis is a genus of ferns in the family Polypodiaceae, subfamily Grammitidoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).

The rhizomes are radially symmetric (without distinct upper and lower surfaces) and bear whorls of stipes, which lack a joint at the point of attachment.

The leaf blades are usually pinnate in cutting, rarely pinnatifid or bipinnatifid, bearing free veins which lack hydathodes at their terminus.

[2] A phylogenetic study of the grammitids found that Dasygrammitis was sister to a clade consisting of Calymmodon, Micropolypodium, Scleroglossum, Tomophyllum, and Xiphopterella.

[3] These six genera share a radially symmetric rhizome, which may be a synapomorphy for this clade (although the trait appears in other grammitid taxa, probably independently).