Ophioglossum gramineum Willd.

Rhizome erect, ovoid to shortly cylindrical; root fleshy. Fronds erect, 4–18 cm tall, leaf bases not persistent. Common stipe 10–70 mm long. Sterile lamina 10–80 mm long, 1–6.5 mm wide, at least 6 times as long as broad, fleshy, sometimes not developed, linear to linear-elliptic, rarely linear-oblanceolate, gradually tapering, attentuate; venation single; areoles elongate. Sporophore 6–50 mm long, on a stipe 3.5–13 cm long; sterile tip 1–5 mm long.

Commonly found in grassland, open woodlands, on floodplains or on damp creek banks.