Along AR 5, 0.2 miles N of intersection with Culp Road, Stone County, Arkansas. In wet, shallow soil with Clinopodium glabrum. Also open sandy areas on flat rocks. Plants we examined in this large population were all unisexual, supporting the report that I butleri is dioecious. Larger plants in deeper soil with graminoids. 30 June 2014. 36°5'44.2" North, 92°8'50.6" West (36.095603, -92.147383)
Near Bowling Green, Kentucky
Microspores. Coffee Co, TN.
Near Bowling Green, Kentucky
May Prairie, Coffee County, Tennessee. This could be I melanopoda!
