Home › Authors › Stephen D. Koch 👤 Stephen D. Koch b. 1940 – d. 2017 · 2 books Biography Stephen D. Koch (1940-2017) was a botanist and author. Books by Stephen D. Koch ERAGROSTIS PETINACEA (Illinois Biological Monographs) 1974 The Eragrostis pectinacea-pilosa complex in North and Central America (Gramineae: Eragrostoideae) 1974