Antrophyum is a genus of ferns in the family Pteridaceae. They are commonly known as lineleaf ferns.
Like most other vittarioid ferns, members of the genus have simple, straplike leaves. Most species lack a costa (midrib), although a few have a partial one, and the leaves are generally more than 1 centimetre (0.4 in) wide. The leaves have netlike venation, with three or more rows of areolae ('gaps' in the net of veins) on either side of the midline. Linear sori are borne along the veins throughout ...