Vernacular names:
Onathumba, ഓണത്തുമ്പ, പർപടകപ്പുല്ല് (Malayalam), Old world diamond-flower (English), Parpatah (Sanskrit), Parpatagam (Tamil)
Distribution: Pantropical
Description: Prostrate herbs; stem 4-angled. Leaves linear-lanceolate, base attenuate. Flowers 2-6 in a corymb, white. Fruit subglobose, loculicidal, dehiscing at apex only; seeds minute, trigonous.
Habit: Herb
Habitat: Degraded forest areas, also in the plains
Flowering & Fruiting: April-September
Parts used: Whole plant
Properties & Uses: Whole plant is cooling, anthelmintic and febrifuge. Plant juice is used for the treatment of fever, gastric irritability, nervous depression and diseases of the liver.