Harry Delbert Thiers (January 22, 1919, in Fort McKavett, Texas – August 8, 2000, in Ohio) was an American mycologist who studied and named many fungi native to North America, particularly California.
He comprehensively revised and expanded on the North American collection of boletes and named many new species.
[1] Species authored by Thiers include the boletes Suillellus amygdalinus, Boletus barrowsii, Xerocomellus dryophilus, Rubroboletus pulcherrimus, Leccinum manzanitae, and other mushrooms including Gymnopilus luteoviridis and Russula xanthoporphyrea.
[2] The fungal genera of Chaetothiersia and Harrya[3] and the species of Cortinarius thiersii were named in his honor.
[5] The herbarium has taxonomic coverage of fleshy fungi, lichens, bryophytes, and vascular plants.