Extract from Wikipedia article: Volvopluteus gloiocephalus, commonly known as the big sheath mushroom, rose-gilled grisette, or stubble rosegill, is a species of mushroom in the family Pluteaceae. For most of the 20th century it has been known under the names Volvariella gloiocephala or Volvariella speciosa, but recent molecular studies have placed it as the type species of the genus Volvopluteus, newly created in 2011. The cap of this mushroom is about 5–15 cm (2–6 in) in diameter, varies from white to grey or grey-brown, and is markedly sticky when fresh. The gills start out as white but they soon turn pink. The stipe is white and has a sack-like volva at the base. Microscopical features and DNA sequence data are of great importance for separating V. gloiocephalus from related species. V. gloiocephalus is a saprotrophic fungus that grows on grassy fields and accumulations of organic matter like compost or woodchips piles. It has been reported from all continents except Antarctica.
Big sheath mushrooms (Volvopluteus gloiocephalus) on a lawn on Anderson Street. College Station, Texas, January 28, 2018 Vet, Anderson Street, Lulac Oak Hill, College Station, Brazos County, Texas, 77840, United States
Big sheath mushroom (Volvopluteus gloiocephalus, Volvariella speciosa) on a lawn on Anderson Street. College Station, Texas, February 24, 2018
Big sheath mushroom (Volvopluteus gloiocephalus) on rotten wood in Lick Creek Park. College Station, Texas, November 22, 2018 14802 Rock Prairie Rd, College Station, TX 77845, USA
Big sheath mushroom (Volvopluteus gloiocephalus) under oaks on the university golf course on Texas Avenue. College Station, Texas, February 26, 2019
Big sheath mushroom (Volvopluteus gloiocephalus) in mulch under live oaks on the university golf course on Texas Avenue. College Station, Texas, February 26, 2019
Big sheath mushrooms (Volvopluteus gloiocephalus) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019 23400 Park Rd 12, Washington, TX 77880, USA
Dissected big sheath mushrooms (Volvopluteus gloiocephalus) on a lawn near Robinson Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019 23400 Park Rd 12, Washington, TX 77880, USA
Big sheath mushroom (Volvopluteus gloiocephalus) and some Agaricus on a lawn in Wolf Pen Creek Park. College Station, Texas, January 1, 2020 2301 Eastmark Dr, College Station, TX 77840, USA
Underside of big sheath mushroom (Volvopluteus gloiocephalus) on a lawn in Wolf Pen Creek Park. College Station, Texas, January 1, 2020 2301 Eastmark Dr, College Station, TX 77840, USA
Dissected big sheath mushroom (Volvopluteus gloiocephalus) and some Agaricus on a lawn in Wolf Pen Creek Park. College Station, Texas, January 1, 2020 2301 Eastmark Dr, College Station, TX 77840, USA
Big sheath mushrooms (Volvopluteus gloiocephalus) in Lick Creek Park. College Station, Texas, January 15, 2020 14802 Rock Prairie Rd, College Station, TX 77845, USA
Big sheath mushroom (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2020 23400 Park Rd 12, Washington, TX 77880, USA
Side view of big sheath mushroom (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2020 23400 Park Rd 12, Washington, TX 77880, USA
Dissected big sheath mushroom (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2020 23400 Park Rd 12, Washington, TX 77880, USA
Big sheath mushrooms (Volvopluteus gloiocephalus) in grassy area near Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 2, 2020 23400 Park Rd 12, Washington, TX 77880, USA
Stubble rosegill mushrooms (Volvopluteus gloiocephalus) on mulch under a swamp cypress on a lawn on George Bush Drive. College Station, Texas, June 28, 2020 1404 Texas Ave S, College Station, TX 77840, USA
Side view of stubble rosegill mushrooms (Volvopluteus gloiocephalus) on mulch under a swamp cypress on a lawn on George Bush Drive. College Station, Texas, June 28, 2020 1404 Texas Ave S, College Station, TX 77840, USA
Rosegill mushrooms Volvopluteus gloiocephalus on mulch under a swamp cypress on a lawn on George Bush Drive. College Station, Texas, June 28, 2020 1404 Texas Ave S, College Station, TX 77840, USA
Cross section of stubble rosegill mushrooms (Volvopluteus gloiocephalus) on mulch under a swamp cypress on a lawn on George Bush Drive. College Station, Texas, June 28, 2020 1404 Texas Ave S, College Station, TX 77840, USA
Stubble rosegill mushroom (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021 23400 Park Rd 12, Washington, TX 77880, USA
Cross section of stubble rosegill mushroom (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021 23400 Park Rd 12, Washington, TX 77880, USA
Rosegill mushroom (Volvopluteus gloiocephalus) on prairie with mulch (pore print dense, light brown) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023 Washington-on-the-Brazos State Historic Site, PR 12, Washington, Washington County, Texas, 77880, United States
Cross section of rosegill mushroom (Volvopluteus gloiocephalus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023 Washington-on-the-Brazos State Historic Site, PR 12, Washington, Washington County, Texas, 77880, United States
Spores (in lugol) of a rosegill mushroom (Volvopluteus gloiocephalus) collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
Spores (in KOH) of a rosegill mushroom (Volvopluteus gloiocephalus) collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 28, 2023
Stubble rosegill mushrooms (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 16, 2023
Side view of stubble rosegill mushrooms (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 16, 2023
Section and underside of stubble rosegill mushrooms (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 16, 2023
Mature stubble rosegill mushrooms (Volvopluteus gloiocephalus) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 16, 2023
Spores (in KOH, spore print orange-brown) of white mushrooms Volvopluteus gloiocephalus from a lawn, collected a day before in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 17, 2023
Spores (in KOH) of white mushrooms Volvopluteus gloiocephalus from a lawn, collected a day before in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 17, 2023
Spores (in KOH) of older grey caps of mushrooms Volvopluteus gloiocephalus from a lawn, collected a day before in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 17, 2023