Leguminosae is an erect evergreen shrub with a height of 40-50 cm and a density of 1-5 m. Pods are 6-9 cm long and 8- 12 mm wide, and are grayish white pubescent. Born in dry rocky slopes or sandy land or river beach at an altitude of 3000-3300 meters. Distributed in Tibet.
At present, there is also a kind of horsetooth bean on the market, which is often called "all-day horsetooth bean". It is neurotoxic and not the fruit of gastrodia elata.