United States, Illinois, Cook, Paintbrush Prairie.
Paintbrush Prairie, Markham: Millard Ave. off Frontage Rd.,of Interstate 294. Collected along path east of main trail,15 ft. from parking area at south end.
Mesic pririe
Physostegia virginiana, Silphium integrifolium, S. laciniatum, Ratibida pinnata, Euphorbia corollata, Sporobollus heterolepis, Veronocastrum virginicum, Allium cernuum, Aster ericoides, Penstemon sp.,
Tall grass in anthesis. Yellow anthers. Bluish inflorescence and stems