Black-footed Marasmus

Tetrapyrgos nigripes

Tetrapyrgos nigripes is a mushroom in the family Marasmiaceae.
Black-footed Marasmus - Tetrapyrgos nigripes Tiny, white mushrooms that were 5 mm tall or less. The stipes were mostly grayish black with fine hairs, and the bases were dark black. The gills were white and distant. Habitat: Growing on an oak (Quercus sp.) leaf in a mixed forest. https://www.jungledragon.com/image/83489/black-footed_marasmus_-_tetrapyrgos_nigripes.html https://www.jungledragon.com/image/83492/black-footed_marasmus_-_tetrapyrgos_nigripes.html https://www.jungledragon.com/image/83490/black-footed_marasmus_-_tetrapyrgos_nigripes.html Black-footed Marasmus,Geotagged,Summer,Tetrapyrgos nigripes,United States

Appearance

Cap: 0.5-2 cm across; convex, becoming flat; bald or finely dusted; becoming slightly wrinkled; white.

Gills: Attached to the stem or beginning to run down it; distant or nearly so; with cross-veins; white; sometimes discoloring reddish.

Stem: 2-5 cm long; less than 2 mm thick; equal; dry; straight; inserted directly into the substrate; tough; whitish when young but quickly becoming black from the base upwards; covered with tiny white hairs.

Flesh: Thin; a little rubbery; whitish.

Odor and Taste: Not distinctive.

Spore Print: White.
Black-footed Marasmus - Tetrapyrgos nigripes Tiny, white mushrooms that were 5 mm tall or less. The stipes were mostly grayish black with fine hairs, and the bases were dark black. The gills were white and distant. Habitat: Growing on an oak (Quercus sp.) leaf in a mixed forest. https://www.jungledragon.com/image/83491/black-footed_marasmus_-_tetrapyrgos_nigripes.html https://www.jungledragon.com/image/83490/black-footed_marasmus_-_tetrapyrgos_nigripes.html https://www.jungledragon.com/image/83489/black-footed_marasmus_-_tetrapyrgos_nigripes.html Black-footed Marasmus,Geotagged,Summer,Tetrapyrgos nigripes,United States

Distribution

Widely distributed east of the Mississippi River.
Black-footed Marasmus - Tetrapyrgos nigripes Tiny, white mushrooms that were 5 mm tall or less. The stipes were mostly grayish black with fine hairs, and the bases were dark black. The gills were white and distant. Habitat: Growing on an oak (Quercus sp.) leaf in a mixed forest. https://www.jungledragon.com/image/83489/black-footed_marasmus_-_tetrapyrgos_nigripes.html https://www.jungledragon.com/image/83491/black-footed_marasmus_-_tetrapyrgos_nigripes.html https://www.jungledragon.com/image/83492/black-footed_marasmus_-_tetrapyrgos_nigripes.html Black-footed Marasmus,Geotagged,Summer,Tetrapyrgos nigripes,United States

Habitat

Saprobic on leaf litter and twigs in hardwood forests; growing alone or gregariously; summer and fall.

References:

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https://www.mushroomexpert.com/tetrapyrgos_nigripes.html
Taxonomy
KingdomFungi
DivisionBasidiomycota
ClassAgaricomycetes
OrderAgaricales
FamilyMarasmiaceae
GenusTetrapyrgos
SpeciesTetrapyrgos nigripes
Photographed in
United States of America