A medium-sized to large, perennial, suspended aquatic herb. Rhizoids present at the base or shortly above the base of the peduncle, bearing botryform or leaf-like branches. Stolons filiform, terete, branched, papillose. Leaves very numerous, semicircular in outline, 1-8 cm long, divided from the base into 3-5 semiverticillate primary segments, the secondary segments pinnate, alternate, each pinna dichotomously divided into numerous further segments, the ultimate segments capillary, terete, setulose. Traps dimorphic, obliquely ovoid. Racemes 5-25 cm long, up to 10-flowered. Bracts ovate to suborbicular, basifixed, 1-nerved, truncate at base, acute to acuminate at apex. Bracteoles absent. Flowers up to 10 mm long. Pedicels 6-20 mm long. Calyx lobes subequal, ovate to oblong, fleshy. Corolla bright yellow; upper lip ovate, hairy at base, obtuse to retuse at apex; lower lip obovate, hairy at throat, truncate, undulate at apex. Spur more or less equal to lower lip in length, papillose, glandular-hairy at base, obtuse at apex. Stamens c. 2 mm long; filaments curved, dilated above, papillose; anther thecae confluent. Ovary subglobose. Style thick; stigma 2-lipped, lower lip hairy, margin ciliate, upper lip obsolete. Capsule globose with a long beak, circumscissile. Seeds polygonal, margin winged. Flowering and fruiting period: July to April with a peak during October to January. A small, annual, terrestrial herb. Rhizoids numerous, capillary. Stolons few, capillary, branched. Leaves narrowly linear, rounded or subacute at apex, 10-20 x 0.5-1.0 mm. Traps globose, stalked. Racemes 3-30 cm long, erect, 1-8- flowered. Bracts basifixed, ovate, obtuse to acute at apex. Bracteoles subulate. Flowers 5-15 mm long. Pedicels 2.5-4.0 x 1.0-1.5 mm, broadly winged, spreading at anthesis, recurved in fruit. Calyx lobes subequal, ovate. Corolla yellow; upper lip linear oblong; lower lip orbicular to ovate, hairy in throat, gibbous at base. Spur subulate, acute at apex. Stamens c. 1.5 mm long; filaments straight, 1 mm long; anther thecae distinct. Ovary ovoid, dorsiventrally compressed. Style distinct; stigma 2-lipped, lower lip semicircular, the upper one very short or obsolete. Capsule broadly ellipsoid, dorsiventrally compressed. Seeds ovoid, ellipsoid to obovoid, numerous. Flowering and fruiting period: July to December with a peak during August to October. Habitat: In wet and marshy areas near perennial water bodies, falls, streams, lakes and in rice fields. Distribution within Bangladesh : It is commonly found in all the districts of the country. Distribution outside Bangladesh: Australia, China, Hong Kong, India, Indo-China, Indonesia, Japan, Korea, Malaysia, Myanmar, Nepal, New Guinea, Philippines, Sri Lanka and Thailand. An annual or perennial, aquatic herb. Rhizoids absent. Stolons filiform, glabrous, branched. Leaves up to 5 cm long; primary segments 3-5, semiverticillate, filiform; secondary segments 2 per point and repeatedly divided; ultimate segments capillary, terete, minutely setulose. Traps obliquely ovoid, shortly stalked, slightly compressed. Racemes up to 20 cm long, held above water level by floats, up to 12-flowered; floats globose, ellipsoid to cylindrical, usually at the middle of peduncle, rarely near at base. Bracts basifixed, elliptic to ovate-deltoid. Bracteoles absent. Flowers up to 8 mm long. Pedicels 2-6 mm long, terete, erect at anthesis and recurved in fruit. Calyx larger than the capsule. Calyx lobes subequal, accrescent, reflexed or rarely covering the capsule. Corolla yellow, glandular hairy; upper lip broadly ovate, emarginate, rounded at apex; lower lip orbicular, hairy in throat, emarginate or crenate at apex, bigibbous at base. Spur short, cylindrical, slightly curved, obtuse at apex. Stamens c. 1.5 mm long; filaments dilated towards anther; anther thecae distinct. Ovary globose. Style short, cylindrical; stigma 2-lipped, lower lip semiorbicular and hairy, upper lip 3-denticulate. Capsule globose, circumscissile, shorter than the calyx. Seeds prismatic, 4-7 angled, winged on all the angles. Flowering and fruiting period: July to April with a peak during October to February.