Synonyms: Hypochnus canadensis, Hypochnus ferruginosus, Kneiffiella bombycina, Kneiffiella fibrosa, Knieffiella bombycina, Tomentella bombycina, Tomentella ferruginosa, Tomentella fibrosa, Tomentellina bombycina, Tomentellina ferruginosa, Tomentellina fibrosa, Zygodesmus fibrosus.
Odontia fibrosa is a species of tooth fungus that grows on decaying wood, particularly oak and pine. In East and Central Texas, it typically fruits in the spring and fall, forming small, white to cream-colored teeth or spines on the surface of logs, stumps, and fallen branches. The fungus is relatively common in the region's deciduous and mixed forests, where it plays a role in decomposing organic matter.
Corticioid fungus Odontia fibrosa (Tomentella fibrosa) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 28, 2018
Lone Star Hiking Trail, Montgomery, TX 77356, USA
Corticioid fungus Odontia fibrosa (Tomentella fibrosa) on underside of a burnt fallen branch on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 28, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Texture of corticioid fungus Odontia fibrosa (Tomentella fibrosa) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 28, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Texture of corticioid fungus Odontia fibrosa (Tomentella fibrosa) on underside of a fallen burnt tree branch on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 28, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Bright red fungus Odontia fibrosa (Tomentella fibrosa) on underside of a log on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, September 28, 201915451 FM1725, Cleveland, TX 77328, USA
Bright red fungus Odontia fibrosa (Tomentella fibrosa) covering underside of a log on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, September 28, 201915451 FM1725, Cleveland, TX 77328, USA
Bright red fungus Odontia fibrosa (Tomentella fibrosa) on rotting wood on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, September 28, 201915451 FM1725, Cleveland, TX 77328, USA
Corticioid fungus Odontia fibrosa (Tomentella fibrosa) on rotting wood on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, September 28, 201915451 FM1725, Cleveland, TX 77328, USA
Spreading red fungus Odontia fibrosa (Tomentella fibrosa) under an oak(?) log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 11, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Corticioid fungus Odontia fibrosa (Tomentella fibrosa) with water droplets (guttation) on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 11, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Corticioid mushroom Odontia fibrosa (Tomentella fibrosa) under an oak log on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, December 29, 2021Lone Star Hiking Trail, Montgomery County, Texas, United States
Red corticioid fungus Odontia fibrosa (Tomentella fibrosa) on a fallen oak near Pole Creek in Sam Houston National Forest, east from Richards. Texas, January 8, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Close-up of red corticioid fungus Odontia fibrosa (Tomentella fibrosa) on a fallen oak near Pole Creek in Sam Houston National Forest, east from Richards. Texas, January 8, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Margin of red corticioid fungus Odontia fibrosa (Tomentella fibrosa) on a fallen oak near Pole Creek in Sam Houston National Forest, east from Richards. Texas, January 8, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Spores (in KOH) of red corticioid fungus Odontia fibrosa (Tomentella fibrosa) from a fallen oak, collected a day before in Sam Houston National Forest. Texas, January 9, 2023
Spores (in lugol) of red corticioid fungus Odontia fibrosa (Tomentella fibrosa) from a fallen oak, collected a day before in Sam Houston National Forest. Texas, January 9, 2023
Spore size 6.4 - 7 × 4.9 - 6.1 µm, length to width ratio Q = 1 - 1.3.
Orange corticioid fungus Odontia fibrosa (Tomentella fibrosa) together with other corticioid fungi under an oak log (spore print white(?)) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, November 17, 2023906, Ashburn Avenue, College Station, Brazos County, Texas, 77840, United States
Brown corticioid fungus Odontia fibrosa (Tomentella fibrosa) on rotting oak(?) wood on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, November 19, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Spores (in KOH) of orange fungus Odontia fibrosa (Tomentella fibrosa)(?) from a broadleaf tree log from muddy area, collected a day before in Sam Houston National Forest. Texas, November 20, 2023Observations of the fungus Odontia fibrosa in East and Central Texas reveal its presence on various substrates, including burnt fallen branches, logs, and rotting wood. The fungus exhibits a range of colors, from bright red to orange and brown, and is often found on the underside of logs or branches. Its texture is also varied, with some observations noting a corticioid appearance. Odontia fibrosa has been spotted in different locations within Sam Houston National Forest, including Caney Creek, Winters Bayou Trail, and Little Lake Creek Loop Trail, as well as in David E. Schob Nature Preserve in College Station. Spore prints have been observed to be white, and spores have been examined in KOH and lugol solutions. The fungus appears to thrive in humid environments, with water droplets often present on its surface.
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