Harry D. Thiers

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. Thiers taught mycology at San Francisco State University. He comprehensively revised and expanded on the North American collection of boletes and named many new species.

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.

The standard author abbreviation Thiers is used to indicate this person as the author when citing a botanical name.