A great many mushroom species have gills or tubes from which spores are released; a relative few have spines, or so-called teeth, instead. One widespread toothed mushroom who grows on the ground is Hydnum repandum, the Hedgehog Mushroom. Author David Spahr speaks highly of this edible, typically bug-free mushroom, in particular noting the Hedgehog Mushrooms's pleasing aroma. Referring to his experience dehydrating them, he writes, "I do not think any mushroom makes my house smell better".* To learn more about Hydnum repandum, read Spahr's online article and visit Michael Kuo's authoritative site. (To view the following images in full-size, click here.)
*David Spahr, Edible and Medicinal Mushrooms of New England and Eastern Canada (2009), p. 54. A free web-based version of the book can be found here.