Anatomical and physiological differences of eight species from Asteraceae

Eight exotic species of asteraceae widely distributed in China were studied, which included 6 kinds of invasive species. The results showed that invasive species are more advanced than noninvasive species in modes of dissemination. At the same time, there was no significant difference between invasive species and noninvasive species through hormone content, tannin content and germination of air-dried seeds.