Range and Habitat in Illinois
Many-Rayed Aster is largely restricted to west-central and south-west Illinois, where it is uncommon to occasional (see Distribution Map). Elsewhere in the state, it is absent. This species is endemic to the mid-section of the United States, where it is found primarily in Arkansas, Missouri, and Illinois. Habitats include upland oak woodlands, upland oak savannas, thinly wooded bluffs along major rivers, partially shaded cliffs, rocky thickets, and various kinds of glades (limestone, sandstone, chert, etc.). This aster is fairly conservative ecologically, but it will adapt to minor levels of disturbance and probably benefits from occasional wildfires.