"Maruba-hatake-mushiro" (Lobelia loochooensis) belongs to Campanulaceae (the Bellflower family). It is an evergreen herb that is distributed in the Ryukyu Chain, Amami Ooshima to Okinawa Island, Kume Island in Japan. This herb grows in a special environment where spring water springs at rocks along the coast, and up tp a height of about 10 cm. The stems are much branched, take roots at the nodes, and spread to matlike. Leaves are obovate to ovoid, shiny, with short stalks attached. Pale blue tubular flowers will bloom at the top of the stalk from July to August. The corolla is quintuple-partite.