Hypericum japonicum

An indigenous herb of wet places among grass in open areas, along ditches and faddy fields. Common in the montane zone. 

Trailing St. John's wort (Hypericum humifusum)

An introduced herb native to the Europe. Naturalized in open places of the upper montane zone. 

St.John's Wort(Hypericum mysurense)

An indigenous much-branched shrub occurs in patanas, grasslands and open busy places in upper montane zone (Above 1500 m). Flowering throughout the year.