April 15, 2024 Carlton, L., N. C. Duncritts, Y. A. Chung and J. A. Rudgers. 2018. Plant-microbe interactions as a cause of ring formation in Bouteloua gracilis. Journal of Arid Environments 152(May):1-5. Home » Carlton, L., N. C. Duncritts, Y. A. Chung and J. A. Rudgers. 2018. Plant-microbe interactions as a cause of ring formation in Bouteloua gracilis. Journal of Arid Environments 152(May):1-5.