American lichenologist (1939-2021).
Richard Clinton "Dick" Harris (December 6, 1939 – May 10, 2021) was an American lichenologist associated for most of his career with the New York Botanical Garden. He was especially known for his work on pyrenocarpous lichens and lichenicolous fungi and for his wide field knowledge of the lichen flora of eastern North America. Over more than five decades he described over 200 new species and infraspecific taxa, 14 genera, and three families of lichen-forming and lichenicolous fungi, and became an influential figure in North American organismal lichenology.