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Kidney-shaped Tooth

Fungi: Basidiomycota: Agaricomycetes: Polyporales: Meruliaceae: Mycorrhaphium adustum (Schwein.) Maas Geest.

Mycorrhaphium adustum – Kidney-shaped Tooth

Synonyms: Hydnum adustum, Mycoleptodonoides adusta, Steccherinum adustum.

Common name: Kidney-shaped Tooth.

AI-generated description

Mycorrhaphium adustum is a species of fungus that belongs to the family Meruliaceae. It is a brown-rot fungus that grows on decaying wood, typically in humid environments. In East and Central Texas, Mycorrhaphium adustum has been found growing on logs, stumps, and other dead wood in forests, particularly in areas with rich soil and abundant moisture. The fungus produces effused-reflexed to resupinate fruiting bodies with a smooth to velvety hymenial surface, and its spores are cylindrical to subcylindrical in shape. It is a relatively rare species in the region, but can be found throughout the year, especially during periods of high humidity and warm temperatures.

Photos of this mushroom from East and Central Texas

Kidney-shaped tooth mushrooms (<B>Mycorrhaphium adustum</B>)(?) on a fallen branch in Lick Creek Park. College Station, Texas, <A HREF="../date-en/2018-06-13.htm">June 13, 2018</A>
LinkKidney-shaped tooth mushrooms (Mycorrhaphium adustum)(?) on a fallen branch in Lick Creek Park. College Station, Texas, June 13, 2018
Location on mapsRaccoon Run, College Station, TX 77845, USA
Kidney-shaped tooth fungus (<B>Mycorrhaphium adustum</B>) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, <A HREF="../date-en/2020-05-30.htm">May 30, 2020</A>
LinkKidney-shaped tooth fungus (Mycorrhaphium adustum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, May 30, 2020
Location on mapsLone Star Hiking Trail, Coldspring, TX 77331, USA
Underside of kidney-shaped tooth fungus (<B>Mycorrhaphium adustum</B>) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, <A HREF="../date-en/2020-05-30.htm">May 30, 2020</A>
LinkUnderside of kidney-shaped tooth fungus (Mycorrhaphium adustum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, May 30, 2020
Location on mapsLone Star Hiking Trail, Coldspring, TX 77331, USA
Kidney-shaped tooth fungus (<B>Mycorrhaphium adustum</B>) on rotting wood in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, <A HREF="../date-en/2020-05-30.htm">May 30, 2020</A>
LinkKidney-shaped tooth fungus (Mycorrhaphium adustum) on rotting wood in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, May 30, 2020
Location on mapsLone Star Hiking Trail, Coldspring, TX 77331, USA
Dissected kidney-shaped tooth fungus (<B>Mycorrhaphium adustum</B>) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, <A HREF="../date-en/2020-05-30.htm">May 30, 2020</A>
LinkDissected kidney-shaped tooth fungus (Mycorrhaphium adustum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, May 30, 2020
Location on mapsLone Star Hiking Trail, Coldspring, TX 77331, USA
Kidney-shaped tooth mushrooms (<B>Mycorrhaphium adustum</B>) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, <A HREF="../date-en/2020-05-30.htm">May 30, 2020</A>
LinkKidney-shaped tooth mushrooms (Mycorrhaphium adustum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, May 30, 2020
Location on mapsLone Star Hiking Trail, Shepherd, TX 77371, USA
Kidney-shaped tooth mushrooms (<B>Mycorrhaphium adustum</B>) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2020-05-31.htm">May 31, 2020</A>
LinkKidney-shaped tooth mushrooms (Mycorrhaphium adustum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 31, 2020
Location on mapsLittle Lake Creek Loop Trail, Montgomery, TX 77356, USA
Kidney-shaped tooth mushrooms (<B>Mycorrhaphium adustum</B>) on pieces of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2020-05-31.htm">May 31, 2020</A>
LinkKidney-shaped tooth mushrooms (Mycorrhaphium adustum) on pieces of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 31, 2020
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
Kidney-shaped tooth mushrooms (<B>Mycorrhaphium adustum</B>) on an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2020-07-03.htm">July 3, 2020</A>
LinkKidney-shaped tooth mushrooms (Mycorrhaphium adustum) on an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2020
Location on mapsLittle Lake Creek Loop Trail, Montgomery, TX 77356, USA
Spores of kidney-shaped tooth mushroom (<B>Mycorrhaphium adustum</B>) (no pictures of the mushroom were taken, spore print white, fungus turns black), collected in Big Creek Scenic Area of Sam Houston National Forest a day before. Texas, May 1, 2023
LinkSpores of kidney-shaped tooth mushroom (Mycorrhaphium adustum) (no pictures of the mushroom were taken, spore print white, fungus turns black), collected in Big Creek Scenic Area of Sam Houston National Forest a day before. Texas, May 1, 2023

AI-generated summary of observations

Observations of Mycorrhaphium adustum in East and Central Texas reveal its presence on various types of wood. The fungus was found on a fallen branch in Lick Creek Park, College Station, and in Big Creek Scenic Area of Sam Houston National Forest, Shepherd. It grew on rotting wood, logs, and pieces of wood on trails, including Caney Creek Trail. The fungus's underside and dissected parts were also observed. Notably, the spores of Mycorrhaphium adustum were white, and the fungus turned black. These observations took place over several years, from 2018 to 2023, in different locations within Sam Houston National Forest, indicating the fungus's widespread presence in the region. The fungus was often found on oak logs and other types of wood, suggesting its preference for certain substrates.

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Acknowledgements

Mushroom Observer and Facebook for learning names of local mushrooms.

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