Distinguished from other subgenera by the combination of evergreen leaves, pinnae entire or merely serrate, cross-veins regularly uniting in pairs to form parallel rows of usually more than 10 areoles between costa and pinna margin, areoles each with a single excurrent, usually free, vein produced at the point of union of the cross-veins, and elongate, exindusiate sori. x = 36.

Discussion

Species 20 and 21 are included in the genus Meniscium by some workers.

Selected References

None.

Lower Taxa

Thelypteris reticulata, Thelypteris serrata