]> S. D. Koch [author note: Poaceae] [collector note: CHAPA] Example of Names published: Eragrostis pilosa var. perplexa (Harvey) S.D.Koch, Illinois Biol. Monogr. 48: 28 (1974) Botany Koch, Stephen Douglas Koch, Stephen Douglas S.D.Koch S. D. Koch Koch, Stephen D. et alia Stephen Douglas Koch 1940 2017