Maryland Biodiversity Project - Horsehair Fungus (Marasmius rotula)

Horsehair Fungus Marasmius rotula (Scopoli) Fries

Kingdom Fungi > Phylum Basidiomycota > Class Agaricomycetes > Order Agaricales > Family Marasmiaceae > Genus Marasmius Horsehair Fungus - Marasmius rotula - https://www.marylandbiodiversity.com/view/19155

Description:

Cap: White/yellowish; hemispheric with small depression; margin grooved. Gills: White to pale yellow, attached to a collar; distant. Stalk: Light, especially at apex, becoming reddish-brown to blackish in age; may be small bulb at base. Compare to M. capillaris which grows on oak/hardwood leaves (J. Solem, pers. comm.).

Where to find:

Habitat: Groups on dead wood (J. Solem, pers. comm.).

Records:

There are 16 records in the project database.

Links:

View taxon at MycoBank

View taxon at iNaturalist

View taxon at NatureServe

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Seasonality:

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Horsehair Fungus (fruiting bodies) in Howard Co., Maryland (6/6/2016). (Photo ID: 92739 - Psn: 20)

Horsehair Fungus (fruiting bodies) in Howard Co., Maryland (6/6/2016). Photo by Joanne Solem. (MBP list)

Horsehair Fungus in Howard Co., Maryland (6/6/2016). (c) Joanne and Robert Solem, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 323616 - Psn: 20)

Horsehair Fungus in Howard Co., Maryland (6/6/2016). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Horsehair Fungus (aging fruiting bodies) in Howard Co., Maryland (12/13/2011). (Photo ID: 92741 - Psn: 30)

Horsehair Fungus (aging fruiting bodies) in Howard Co., Maryland (12/13/2011). Photo by Richard Orr. (MBP list)

Horsehair Fungus in Montgomery Co., Maryland (10/10/2018). Determined by Jo Solem. (Photo ID: 125424 - Psn: 35)

Horsehair Fungus in Montgomery Co., Maryland (10/10/2018). Determined by Jo Solem. Photo by Anne Looker. (MBP list)

Horsehair Fungus (gills and upper stalks) in Howard Co., Maryland (6/6/2016). (Photo ID: 92740 - Psn: 40)

Horsehair Fungus (gills and upper stalks) in Howard Co., Maryland (6/6/2016). Photo by Joanne Solem. (MBP list)

Horsehair Fungus in Garrett Co., Maryland (6/22/2019). (c) Fluff Berger, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-sa/4.0/'>CC BY-SA</a>). (Photo ID: 344479 - Psn: 70)

Horsehair Fungus in Garrett Co., Maryland (6/22/2019). (c) Fluff Berger, some rights reserved (CC BY-SA). Photo by Fluff Berger via iNaturalist. (MBP list)

Horsehair Fungus in Montgomery Co., Maryland (9/12/2018). (c) mmn noriko, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 256146 - Psn: 78)

Horsehair Fungus in Montgomery Co., Maryland (9/12/2018). (c) mmn noriko, some rights reserved (CC BY-NC). Photo by mmn_noriko via iNaturalist. (MBP list)

Horsehair Fungus spores collected in Howard Co., Maryland (6/6/2016). Teardrop-shaped, smooth, hyaline; measured 7.7-8.1 X 3.5-4.0 microns. (Photo ID: 92738 - Psn: 100)

Horsehair Fungus spores collected in Howard Co., Maryland (6/6/2016). Teardrop-shaped, smooth, hyaline; measured 7.7-8.1 X 3.5-4.0 microns. Photo by Robert Solem. (MBP list)

Horsehair Fungus in Howard Co., Maryland (6/6/2016). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

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