Perennial herbs (grow for several years from their same root system) found in wide varieties of areas including grasslands in mountains or hills. In Mt. Takao, found at bright roadside. When scratching stems or leaves, produce bitter white milk sap, hence the Japanese name Niga-na literally meaning bitter plants (Only have bitter taste and are not poisonous). Stems and leaves are thin and the entire plant looks tall and skinny. The bottom of leaves has toothed margins (edges of leaves are like a teeth of saw). Flowers are 1.5 cm in diameter and have five to seven tongue-shaped yellow petals. Branches divided into many branches and bloom several flowers scattered on these branches. In rare cases, bloom white flowers and called Shiro-nigabana literally meaning white ixeris dentate. The larger plants with seven to eleven petals are called Hana-nigana literally meaning flowers ixeris dentate.

●Season May to July
●Height about 20 to 50 cm
●Place Trail 1, Trail 5, Mt. Inari, Ura-Takao, Oku-Takao