Pleocnemia irregularis (C.Presl) Holttum

Caudex short, its apex and bases of stipes densely covered with narrow dark brown scales 3-4 cm long; stipe to 80 cm long, green when living, glabrescent; lamina to at least 100 cm long and 60 cm wide, deeply bipinnatifid or just bipinnate near the base; pinnae in many pairs, the lowest with a deeply lobed basiscopic pinnule to 20 cm long and 6 cm wide, much longer than the next pinnule; suprabasal pinnae to 40 × 12 cm, the largest with a few pairs of ± sessile pinnules, distally deeply lobed, the lobes falcate, the largest lobes with crenate margins and acute apex, c. 1 cm wide, a short broad tooth present at the bases of the larger sinuses; upper pinnae gradually less deeply lobed; rachis and bases of costae bearing short hairs on the upper surface, the rest glabrous, lower surface of rachis and costae bearing some hairs 1 mm long, surfaces of costules and veins bearing red glands like those in the son; veins forming single narrow areoles along costae between one costule and the next and shorter areoles along costules, rest of the lamina below sinuses filled with 4-6-sided areoles, rarely with included free veins; sori small, close, scattered irregularly, exindusiate, round or often extending along the veins and sometimes confluent; sporangia often bearing red spherical glands on the hairs attached to their stalks.

A tropical plant. It tends to grow on dry slopes in dense forests. It occurs at low to medium altitudes. In Indonesia it grow from sea level to 650 m above sea level. It grows in cool, moist places. It can be in the sun or shade. It is often along rivers.

The young unfolded leaves are eaten raw or steamed. It is best used cooked in a mixture of other leaves.

It can be grown by buds and spores.