This black beads shaped like grapes is longan, also known as small bitter vegetable, mountain chili, day eggplant, etc., it has no requirements for soil, vitality, mainly grown in the wasteland, roadsides, etc., therefore, in China's provinces with the distribution of even the European, Asian, American tropical areas have its figure. Lobelia is an annual erect herbaceous plant, the fruit can be picked and eaten after black, the appearance of dark and grapes are very similar, eat sweet and sour.