Psathyrella longistriata

Psathyrella longistriata
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Agaricales
Family:	Psathyrellaceae
Genus:	Psathyrella
Species:	P. longistriata
Binomial name
Psathyrella longistriata (Murrill) A.H. Sm.

Psathyrella longistriata Mycological characteristics
	Gills on hymenium
	Cap is conical or campanulate
	Hymenium is adnexed
	Stipe has a ring
	Spore print is buff to brown
	Ecology is saprotrophic
	Edibility is unknown

Psathyrella longistriata, commonly known as the ringed brittlestem ^[1] or ringed psathyrella, ^[2] is a species of mushroom in the family Psathyrellaceae. It is found in the Pacific Northwest. ^[1]

Description

The cap of Psathyrella longistriata is about 1.7-5 centimeters in diameter. It starts out rounded and conical in shape, before becoming campanulate. Tissue from the partial veil sometimes hangs from the margins. ^[1] The margin of the cap is striated when moist. ^[3] These striations usually appear when the mushroom is older. ^[4] The cap also starts out fibrillose. ^[3] The stipe is about 3-9 centimeters long and 8-15 millimeters wide. ^[3] It also has an annulus, which is striated on the top. ^[3] The gills start out grayish buff in color, becoming darker and browner with age. ^[1] The spore print is dark purplish brown. ^[3]

Similar species

Psathyrella kauffmanii is similar, as it also has an annulus. It is found in eastern North America, as well as the American Southwest and the Rocky Mountains. ^[2] Psathyrella ellenae var. yubaensis also has an annulus, but it is smaller than P. longistriata and is not fibrillose. Its annulus and cap are also not striated. ^[3]

Habitat and ecology

Psathyrella longistriata is found in low-elevation forests, where it grows out of rotting wood or leaf litter. It mostly fruits during fall, but occasionally in winter and spring. ^[1]

References

1. Siegel, Noah; Schwarz, Christian (September 1, 2024). Mushrooms of Cascadia: A Comprehensive Guide to Fungi of the Pacific Northwest. Humboldt County, CA: Backcountry Press. p. 100. ISBN   9781941624197.
2. Arora, David (October 1, 1986). Mushrooms Demystified: A Comprehensive Guide to the Fleshy Fungi (2nd ed.). Ten Speed Press. p. 362. ISBN   9780898151695.
3. Wood, Michael. "California Fungi: Psathyrella longistriata". www.mykoweb.com. Retrieved 2025-09-29.
4. "Psathyrella longistriata - Burke Herbarium Image Collection". burkeherbarium.org. Retrieved 2025-09-29.