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
Wood hedgehog mushrooms (Hydnum repandum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 21, 2021 Lone Star Hiking Trail, San Jacinto County, Texas, United States
Wood hedgehog mushrooms (Hydnum repandum) with cross section in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 21, 2021 Lone Star Hiking Trail, San Jacinto County, Texas, United States
Underside of wood hedgehog mushroom (Hydnum repandum(?)) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 28, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Wood hedgehog mushroom (Hydnum repandum(?)) under pines on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 28, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Cross section of wood hedgehog mushroom (Hydnum repandum(?)) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 28, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Large wood hedgehog mushrooms (Hydnum repandum) under pines on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Caps of large wood hedgehog mushrooms (Hydnum repandum) under pines on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Cross section of large wood hedgehog mushroom (Hydnum repandum) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Tiny tooth mushrooms that look like Hydnum repandum on hardened soil in the middle of an old forest road covered by thin layer of needles, under pines, on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, December 26, 2021 Forest Service Rd 231, Montgomery County, Texas, United States
Caps of tooth mushrooms that look like Hydnum repandum on hardened soil in the middle of an old forest road covered by thin layer of needles, under pines, on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, December 26, 2021 Forest Service Rd 231, Montgomery County, Texas, United States
Cross section of tooth mushrooms that look like Hydnum repandum on hardened soil in the middle of an old forest road covered by thin layer of needles, under pines, on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, December 26, 2021 Forest Service Rd 231, Montgomery County, Texas, United States
Tiny tooth mushrooms that look like Hydnum repandum on thin layer of pine needles on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, December 26, 2021 Forest Service Rd 231, Montgomery County, Texas, United States
Wood hedgehog mushrooms (Hydnum repandum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 4, 2022 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Underside of wood hedgehog mushrooms (Hydnum repandum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 4, 2022 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Spores of mushrooms Hydnum repandum collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 4, 2022