Lindsaea linearis Sw.

Rhizome short-to long-creeping, c. 0.6–1 mm diam.; scales to 2 mm long, golden brown. Fronds dimorphic. Stipes widely spaced, 2–26 cm long in fertile fronds, shorter in sterile fronds, red-brown, purplish black or black. Lamina 1-pinnate, linear, c. 5–25 cm long, 5–15 mm wide in fertile fronds, shorter in sterile fronds. Pinnules sessile to shortly stalked, gradually reduced towards apex, often more distant towards base. Sterile pinnules flabellate (asymmetrical or not) to diamond-shaped, to 6–10 mm long and 3–6 mm wide, herbaceous; outer margin crenate or more deeply incised. Fertile pinnules flabellate to broadly cuneate, c. 3–5 mm long and 4–7 mm wide, herbaceous to coriaceous; outer margin uneven. Veins free, 2–4 times forked. Sori usually continuous; indusium 0.7–1 mm wide, not extending to margin, pale greenish, often strongly reflexed. Spores pale brown, smooth.

Occurs in open or partly shaded situations in forest and heathland.