Distinguished from other subgenera by the combination of evergreen leaves, pinnae entire or merely serrate, crossveins 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 crossveins, 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