named thelephantins (specifically, variants thelephantins I–N), some of which can inhibit the enzyme alpha-glucosidase. The compounds hydnellins A and B are terphenyls found in H. suaveolens and Hydnellum geogerirum. The chemicals responsible for the fragrant anise-like aroma of H. suaveolens have been identified as coumarin and para-anisaldehyde. Species Karsten's original 1879 circumscription of Hydnellum contained 19 species. Joost Stalpers included 34 Hydnellum species in his 1993 monograph on the Thelephorales. The tenth edition of the Dictionary of the Fungi (2008) indicated 38 species in the genus. , Index Fungorum lists 39 species of Hydnellum; a figure which does not include the 12 species transferred into this genus from Sarcodon in 2019 by Larsson et al. References Cited works External links Thelephorales genera Taxa named by Petter Adolf Karsten Taxa described in 1879