Harry Delbert Thiers

Harry Delbert Thiers, born January 22, 1919 in Fort McKavett, Texas, died 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 for many years, and notable mycologists active as of the 2000s began as his students. He comprehensively revised and expanded on the North American collection of boletes and named many new species.

Species authored include:

The genus Chaetothiersia was named in his honor.

Cortinarius thiersii was named in his honor.

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