Extract from Wikipedia article: Hydnum repandum, commonly known as the sweet tooth, wood hedgehog or hedgehog mushroom, is a basidiomycete fungus of the family Hydnaceae. First described by Carl Linnaeus in 1753, it is the type species of the genus Hydnum. The fungus produces fruit bodies (mushrooms) that are characterized by their spore-bearing structures—in the form of spines rather than gills—which hang down from the underside of the cap. The cap is dry, colored yellow to light orange to brown, and often develops an irregular shape, especially when it has grown closely crowded with adjacent fruit bodies. The mushroom tissue is white with a pleasant odor and a spicy or bitter taste. All parts of the mushroom stain orange with age or when bruised.
Young sweet tooth mushrooms (Hydnum repandum) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 22, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Sweet tooth mushrooms (Hydnum repandum) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 22, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Wood hedgehog (Hydnum repandum), millcap (Lactarius), and fibrecap (Inocybe) mushrooms in recently flooded area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 5, 2018 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Wood hedgehog mushrooms (Hydnum repandum) in Huntsville State Park. Texas, October 27, 2018 State Park Rd 40, New Waverly, TX 77358, USA
Wood hedgehog mushrooms (Hydnum repandum) under elms and pines in Huntsville State Park. Texas, October 27, 2018 State Park Rd 40, New Waverly, TX 77358, USA
Caps of wood hedgehog mushrooms (Hydnum repandum)(?) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, November 10, 2018 Kirby Nature Trail, Kountze, TX 77625, USA
Young wood hedgehog mushrooms (Hydnum repandum)(?) under old pines on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019
Small tooth mushroom Hydnum repandum under pines on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 8, 2020 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Cross section of a tooth mushroom Hydnum repandum under pines on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 8, 2020 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Young wood hedgehog mushrooms (Hydnum repandum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 9, 2020 Lone Star Hiking Trail, Montgomery, TX 77356, USA