Limnocharis flava
Herb. Petiole trigonous,; leaf blade ,veins 9-13, transverse veins numerous, parallel, base obtuse or subcordate, apex obtuse or retuse. Scapes upper trigonous, 20-90 cm; umbels 2-15-flowered; bracts green, orbic-ular to broadly elliptic . Petals yellowish but blackish toward base, broadly ovate to orbicular, , apex rounded. Stamens shorter than petals; filaments green. Carpels yellowish green. Fruit cluster 1.5-2 cm in diam.; follicles suborbicular. Seeds brown.
Herb. Petiole trigonous, 20-65 cm, stout; leaf blade 6-28 × 4.5-20 cm, veins 9-13, transverse veins numerous, parallel, base obtuse or subcordate, apex obtuse or retuse. Scapes upper trigonous, 20-90 cm; umbels 2-15-flowered; bracts green, orbic-ular to broadly elliptic, 1.5-2 × 1-1.5 cm. Pedicels 2-7 cm. Petals yellowish but blackish toward base, broadly ovate to orbicular, 2-3 × 1-2 cm, apex rounded. Stamens shorter than petals; filaments green. Carpels yellowish green. Fruit cluster 1.5-2 cm in diam.; follicles suborbicular. Seeds brown.