Orange Pinwheel
Marasmius siccus
Life > Fungi > Basidiomycota > Agaricomycotina > Agaricomycetes > Agaricomycetidae > Agaricales > Marasmiineae > Marasmiaceae > Marasmius
Description
The Orange Pinwheel (Marasmius siccus) is a small decomposer that can be found in duff and leaf litter from summer through fall east of the Rocky Mountains.
The cap is pleated and shaped like a pinwheel. The gills are white and distant. The stems of Marasmius mushrooms are elastic. This one has a dark to black stem and white basal mycelium at the point of attachment to the substrate.
Observations
July 6th, 2023 Indian Cave State Park
#159
Growing gregariously (abundant) among oak woodland duff in low riparian woodland area near creek. Oak trees on slope above.
Smell: faintly foul KOH: pileipellis: dull yellow (spicy or dijon mustard yellow) white mycelium; stipe: darkens black, whitens the orange. Taste: “mushroomy phenolic aging into the sensation of back pepper.
GTCGTAACAAGGTTTCCGTAGGTGAACCTGCGGAAGGATCATTATTGAAACATTGTAAAGGGAGGTTGAGCTGGCTCTTCACGAGCATGTGCTCACTTTTCTTTCAATCTTCATCCACCTGTGCACTTTTTGTAGAGAGTTTGAGAAATGGGCCTAGGTCCAAAGTATCGGGCTTTCTATGTTTTACAAACTCTGAACGTATGTCTTTGAATGTCATTTACAAGGTGCTTAATTGAACCTTTTAAAAACTATACAACTTTCAGCAACGGATCTCTTGGCTCTCGCATCGATGAAGAACGCAGCGAAATGCGATAAGTAATGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACCTTGCGCCTCTTGGTATTCCGAGAGGCATGCCTGTTTGAGCGTCATTAAATTCTCAACCTCAAAAGCTTTTTGTTTCTGAGGCTTGGATGTGGAGGTTTTGCCGGCTCTTTAAGAGTCAGCTCCTCTTAAATGCATTAGTGGAAACCGCTTGTAGTCCGCATTGGTGTGATAATTATCTACGCTATTGTTGGCTACAGCTCTGAGGTGTTCGTTTAGGGAAGTGCATTAGTTTGCTCTTTCTGTTTACATGACCCACAGAGTTGGCATCTGCTTCGAACCGTCCTAAGTTACTGGACAATACTTGACTATTTTGACCTCAAATCAGGTAGGACTACCCGCTGAACTTView MycoMap DNA Results
References
Kuo, M. (2012, December). Marasmius siccus. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/marasmius_siccus.html
Marasmius fulvoferrugineus Gilliam, Mycotaxon 4 (1): 82 (1976) [MB#317296]
Created April 22, 2025 at 3:26 PM and last updated April 22, 2025 at 3:26 PM