The leaflets of echinacea are leathery, oblong or oblong, about 6-10cm long and 1.5-3.5cm wide. The apex is sharp or blunt, dark green on the top, very shiny, gray green on the bottom, 1.5-3cm petiole, glabrous and entire.
The small leaves of Hedysarum anserinum are paper-based to leathery, elliptic, oblong elliptic or obovate elliptic, about 9-17cm long and 3-5cm wide. The petioles are relatively longer than the former, about 1.5cm-5cm, longer in the middle and shorter on both sides.
Echinacea is mainly distributed in Taiwan, Guangdong and Guangxi.
It is a common evergreen plant in the tropics and subtropics. It is distributed in the tropical rainforests of Guangdong, Fujian and South America. Now it is also distributed in Japan and India.