Clubmoss mousetail (Ivesia lycopodioides) belongs to the family Rosaceae (the Rose family). It is a perennial herb that is native to California and Nevada. This herb grows in the crevices of rock ledges in the mountains and in wet high-elevation meadows, and it can reach about 30 cm in height. The leaves are flat to cylindrical, up to 15 cm long, each of which is made up of many tiny, lobed leaflets. The bright yellow flowers bloom in mid summer. In the center of the flower are usually five stamens and several pistils.