 Spores (in KOH) of chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) from the base of a hackberry tree, collected in Lick Creek Park. College Station, Texas, November 15, 2023
 Underside of chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) at the base of a hackberry tree on Racoon Run Trail in Lick Creek Park. College Station, Texas, November 15, 2023
 Cystidia and spores of chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) from the base of a hackberry tree, collected in Lick Creek Park. College Station, Texas, November 15, 2023
 Basidia and spores of chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) from the base of a hackberry tree, collected in Lick Creek Park. College Station, Texas, November 15, 2023
 Tissues (in Congo Red) of chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) from the base of a hackberry tree, collected in Lick Creek Park. College Station, Texas, November 15, 2023
 Spores (in KOH, spore print brown) of chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) from the base of a hackberry tree, collected in Lick Creek Park. College Station, Texas, November 15, 2023
 Chestnut brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) (cap 10 cm, stem 2 cm thick) at the base of a hackberry tree in area of oxbows, on Racoon Run Trail in Lick Creek Park. College Station, Texas, November 15, 2023
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea)(?) near Lembolovo, north from Saint Petersburg. Russia, August 24, 2018
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea)(?) near Dibuny, north-west from Saint Petersburg, Russia, September 3, 2018
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Cluster of chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a base of a tree in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, October 11, 2016
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a tree stump in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, October 20, 2016
 Chestnut brittlestem mushrooms (Homophron spadiceum, Psathyrella spadicea) on a tree stump in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 24, 2016
 Spores (in KOH) of chestnut brittlestem mushrooms (Homophron spadiceum) collected in Wolf Pen Creek Park. College Station, March 8, 2024
 Mature chestnut brittlestem mushrooms (Homophron spadiceum) at the base of large living elm in Wolf Pen Creek Park. College Station, March 8, 2024
 Brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) in front of a mouse burrow in an old elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 31, 2021
 Underside of brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) in front of a mouse burrow in an old elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 31, 2021
 Gills of brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) in front of a mouse burrow in an old elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 31, 2021
 Cluster of brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) in front of a mouse burrow in an old elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 31, 2021
 Side view of brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) in front of a mouse burrow in an old elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 31, 2021
 Close-up of gills of brittlestem mushrooms Homophron spadiceum (Psathyrella spadicea) in front of a mouse burrow in an old elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 31, 2021
 Chestnut brittlestem mushrooms (Homophron spadiceum) at the base of large living elm on a lawn (spore print light brown) in Wolf Pen Creek Park. College Station, March 8, 2024
 Chestnut brittlestem mushrooms (Homophron spadiceum) near 4-th South Pond on Elagin Island. Saint Petersburg, Russia, October 7, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum) on a peninsula of 4-th South Pond on Elagin Island. Saint Petersburg, Russia, October 7, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum) near Kuzmolovo, north from Saint Petersburg. Russia, September 24, 2017
 Fairy inkcap (Coprinellus disseminatus) mushrooms together with chestnut brittlestem (Homophron spadiceum) in Sosnovka Park. Saint Petersburg, Russia, September 23, 2017
 Cluster of chestnut brittlestem mushrooms (Homophron spadiceum) near Kuzmolovo, north from Saint Petersburg. Russia, September 24, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum)(?) near Dibuny, north-west from Saint Petersburg. Russia, July 15, 2017
 Group of chestnut brittlestem mushrooms (Homophron spadiceum) at the base of a tree near Kuzmolovo, north from Saint Petersburg. Russia, September 24, 2017
 Chestnut brittlestem mushrooms (Homophron spadiceum) on a mossy stump near Dibuny, north-west from Saint Petersburg. Russia, August 20, 2017
 Brittlestem (Psathyrella) mushrooms on mulch in Lick Creek Park. College Station, Texas, September 11, 2018
 Red edge brittlestem mushrooms (Psathyrella corrugis, Psathyrella gracilis) on a mulched path in Bee Creek Park. College Station, Texas, December 14, 2018
 Red edge brittlestem mushrooms (Psathyrella corrugis, Psathyrella gracilis) on wood chips in Bee Creek Park. College Station, Texas, December 14, 2018
 Group of red edge brittlestem mushrooms (Psathyrella corrugis, Psathyrella gracilis) on a mulched path in Bee Creek Park. College Station, Texas, December 14, 2018
 Gills of red edge brittlestem mushrooms (Psathyrella corrugis, Psathyrella gracilis) on a mulched path in Bee Creek Park. College Station, Texas, December 14, 2018
 Brittlestem mushrooms Psathyrella umbonata on a recent cutting in Lick Creek Park. College Station, Texas, June 21, 2018
 Pale brittlestem mushrooms (Psathyrella candolleana) in Bee Creek Park. College Station, Texas, February 15, 2018
 Brittlestem (Psathyrella) mushrooms in Lick Creek Park. College Station, Texas, June 2, 2020
 Brittlestem mushrooms Psathyrella candolleana in Lick Creek Park. College Station, Texas, July 5, 2019
 Brittlestem mushrooms Psathyrella cernua (Homophron cernuum)(?) near a birch tree on the central alley in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Cluster of brown brittlestem mushrooms Psathyrella cernua (Homophron cernuum)(?) on the central alley in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Group of brown brittlestem mushrooms Psathyrella cernua (Homophron cernuum)(?) on the central alley in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
 Small brittlestem mushrooms (Psathyrella) on mulch in Lick Creek Park. College Station, Texas, June 26, 2020
 Pale brittlestem mushrooms (Psathyrella candolleana) in Lick Creek Park. College Station, Texas, June 2, 2020
 Close-up of small brittlestem mushrooms (Psathyrella) in Lick Creek Park. College Station, Texas, June 26, 2020
 Brittlestem (Psathyrella) mushrooms on a recent cutting through oak forest in Lick Creek Park. College Station, Texas, June 28, 2019
 Brittlestem mushrooms Psathyrella umbonata on a sewage cutting in Lick Creek Park. College Station, Texas, January 15, 2020
 Brittlestem (Psathyrella) mushrooms on wood chips near Nature Center in Lick Creek Park. College Station, Texas, August 24, 2022
 Drying caps of brittlestem mushrooms (Psathyrella) near Birch Creek Unit of Somerville Lake State Park. Texas, October 7, 2018
 Whitish caps of brittlestem mushrooms (Psathyrella) near Birch Creek Unit of Somerville Lake State Park. Texas, October 7, 2018
 Pale brittlestem mushrooms (Psathyrella candolleana(?)) on dry grass on a forest clearing in Lick Creek Park. College Station, Texas, September 1, 2022
 Brittlestem mushrooms (Psathyrella) on a recently flooded road near Birch Creek Unit of Somerville Lake State Park. Texas, October 7, 2018
 Brittlestem mushrooms Psathyrella umbonata on disturbed soil of a recent sewage cutting in Lick Creek Park. College Station, Texas, January 15, 2020
 Caps of pale brittlestem mushrooms (Psathyrella candolleana(?)) on dry grass on a forest clearing in Lick Creek Park. College Station, Texas, September 1, 2022
 Psathyrella umbonata mushrooms on wood chips on a forest cutting in Lick Creek Park. College Station, Texas, October 12, 2018
 Brittlestem mushrooms (Psathyrella) in large numbers in grass on a recently flooded road near Birch Creek Unit of Somerville Lake State Park. Texas, October 7, 2018
 Spores (in Lugol solution) of pale brittlestem mushrooms (Psathyrella candolleana(?)) from dry grass on a forest clearing collected in Lick Creek Park. College Station, Texas, September 1, 2022
 Pale brittlestem (Psathyrella candolleana) on a lawn in Lick Creek Park. College Station, Texas, April 27, 2024
 Pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in College Station Cemetery. College Station, Texas, October 25, 2021
 Pale brittlestem mushrooms (Psathyrella candolleana) in Bee Creek Park. College Station, Texas, June 10, 2019
 Brittlestem mushrooms Psathyrella atrospora on a trail in Bee Creek Park. College Station, Texas, November 3, 2017
 Caps of brittlestem mushrooms Psathyrella atrospora in Bee Creek Park. College Station, Texas, November 3, 2017
 Close-up of brittlestem mushrooms Psathyrella atrospora in Bee Creek Park. College Station, Texas, November 11, 2021
 Pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in Bee Creek Park. College Station, Texas, June 10, 2019
 Pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in Bee Creek Park College Station, Texas, April 25, 2022
 Pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in Bee Creek Park. College Station, Texas, June 30, 2020
 Brittlestem mushrooms Psathyrella atrospora growing on a trail in Bee Creek Park. College Station, Texas, November 3, 2017
 Brittlestem mushrooms Psathyrella atrospora on wood chips in Bee Creek Park. College Station, Texas, November 3, 2017
 Gills of a pale brittlestem mushroom (Psathyrella candolleana(?)) on dry grass on a forest clearing in Lick Creek Park. College Station, Texas, September 1, 2022
 Pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in Wolf Pen Creek Park. College Station, Texas, April 6, 2023
 Spores (in KOH) of pale brittlestem mushrooms (Psathyrella candolleana) collected in Bee Creek Park. College Station, Texas, April 26, 2024
 Pale brittlestem (Psathyrella candolleana) mushrooms on a lawn in Wolf Pen Creek Park. College Station, Texas, November 5, 2017
 Pale brittlestem mushrooms (Psathyrella candolleana) among grass on a lawn in Bee Creek Park. College Station, Texas, June 30, 2020
 Underside of pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in Wolf Pen Creek Park. College Station, Texas, April 6, 2023
 Mature pale brittlestem mushrooms (Psathyrella candolleana) on a lawn in Wolf Pen Creek Park. College Station, Texas, April 6, 2023
 Side view of brittlestem mushrooms Psathyrella atrospora on wood chips in Bee Creek Park. College Station, Texas, November 11, 2021
 Brittlestem mushrooms Psathyrella atrospora on wood chips on a path in bushes in Bee Creek Park. College Station, Texas, November 11, 2021
 Brittlestem mushrooms Psathyrella atrospora growing on wood chips on a trail in Bee Creek Park. College Station, Texas, November 3, 2017
 Spores of pale brittlestem mushrooms (Psathyrella candolleana) in iodine solution, collected in Bee Creek Park College Station, Texas, April 25, 2022
 Spores (in KOH) of mature pale brittlestem mushrooms (Psathyrella candolleana) from a lawn, collected a day before in Wolf Pen Creek Park. College Station, Texas, April 7, 2023
 Brittlegill (Psathyrella) mushrooms under oaks in Lick Creek Park. College Station, Texas, July 16, 2018
 Dissected brittlestem mushroom (Psathyrella) taken from a lawn on Anderson Street. College Station, Texas, October 22, 2017
 Brittlestem (Psathyrella) mushrooms on wood chips under utility poles in Lemontree Park. College Station, Texas, November 4, 2017
 Group of brittlestem (Psathyrella) mushrooms on wood chips under utility poles in Lemontree Park. College Station, Texas, November 4, 2017
 Gills of a pale brittlestem mushroom (Psathyrella candolleana) in Bee Creek Park College Station, Texas, April 25, 2022
 Pale brittlestem mushrooms (Psathyrella candolleana) on Francis Drive. College Station, Texas, November 17, 2017
 Tissues and spores of small brown brittlestem (Psathyrella)(?) mushroom, in Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Cystidia(?) and spores of small brown brittlestem (Psathyrella)(?) mushroom, in Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Pale brittlestem (Psathyrella candolleana) mushrooms on a lawn on Anderson Street. College Station, Texas, November 8, 2017
 Close-up of small brown brittlestem (Psathyrella)(?) mushroom on a path in Andy Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Masses of small brown brittlestem (Psathyrella)(?) mushroom on a path in Andy Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Brittlestem (Psathyrella) mushrooms near Orekhovo, 45 miles north from Saint Petersburg. Russia, August 30, 2018
 Small brown brittlestem (Psathyrella)(?) mushroom on a path among wood chips in Andy Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Spores (in KOH, spore print black) of small brown brittlestem (Psathyrella)(?) mushroom from a path in Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Tissues and spores at low magnification of small brown brittlestem (Psathyrella)(?) mushroom from a path with wood chips, in Anderson Arboretum in Bee Creek Park. College Station, Texas, November 20, 2023
 Brittlegill (Psathyrella) mushrooms in Bee Creek Park. College Station, Texas, March 3, 2018
 Brittlestem (Psathyrella) mushrooms on roadside in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
 Brittlestem mushrooms (Psathyrella) on roadside mulch on Lenin Trail near Dibuny, north-west from Saint Petersburg, Russia, August 15, 2018
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