OCIMUM TENUIFLORUM / KRISHNATHULASI , commonly known as holy basil, tulsi or tulasi,[2] is an aromatic perennial plant in the family Lamiaceae. It is native to the Indian subcontinent and widespread as a cultivated plant throughout the Southeast Asian tropics.

Holy basil is an erect, many-branched subshrub, 30–60 cm (12–24 in) tall with hairy stems. Leaves are green or purple; they are simple, petioled, with an ovate blade up to 5 cm (2 in) long, which usually has a slightly toothed margin; they are strongly scented and have a decussate phyllotaxy. The purplish flowers are placed in close whorls on elongated racemes.

USES:

This type of tulsi helps cure infections such as throat infections, respiratory problems, earaches and skin diseases. The oil from Krishna Tulsi is used as ear drops. It is also used to cure malaria, indigestion, insomnia and cholera.