Botany
· Aquatic, herbaceous fern. Rootstock slender, creeping, branched, the stipes of the sterile fronds 2 to 12 cm high, slender.
· Leaflets 4, obovate-cuneate, glabrous, 10 to 15 cm long or smaller in terrestrial forms, rounded and slightly crenate or subentire at the apex the lateral margin entire, straight, cuneately narrowed to the sessile base.
· Sporocarps (spore bearing organ found near the rootstock) covered with brown hairs when young, becoming glabrous and nearly so, oblong, about 3 mm long, rounded, slightly compressed, somewhat clustered or solitary, their pedicels 5 mm long or less, the upper basal tooth prominent.

Distribution
Widely distributed in the Philippines; in muddy places, shallow pools, etc.

Parts used
· Entire plant.
· Collect about May to October.
· Rinse, dry under the sun.

Characteristics and Pharmacological Effects
Prepared drug sweet tasting with cooling nature.
Diuretic, antiphlogistic and tranquilizer.

Uses
Folkloric
· Neurasthenia, edema.
· Dosage: 15 to 25 gms of dried material or 30 to 60 gms fresh material in decoction.

Availability
Wildcrafted.