Russula subgraminicolor is a small to medium-sized mushroom with a grayish-brown to tan cap, measuring 2-6 cm in diameter. The cap is convex to flat, often with a depressed center, and the margin is entire to slightly wavy. The gills are cream-colored to pale yellow, moderately spaced, and adnexed to emarginate. The stem is white to pale grayish-brown, cylindrical, and 2-5 cm long. In East and Central Texas, Russula subgraminicolor typically fruits in late summer to early fall, often in association with oak and pine trees. It can be found in a variety of habitats, including woodland edges, savannas, and along roadsides. The flesh is mild tasting and has no distinctive odor. Microscopically, the spores are elliptical to subglobose, measuring 6-9 x 5-7 μm, with warts and reticulations.
Mold fungus Syzygites megalocarpus growing on a turquoise brittlegill mushroom Russula subgraminicolor in Lick Creek Park. College Station, Texas, June 29, 2018
Raccoon Run, College Station, TX 77845, USA
Turquoise brittlegill mushrooms (Russula subgraminicolor) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, June 29, 2018Raccoon Run, College Station, TX 77845, USA
Turquoise brittlegill mushrooms (Russula subgraminicolor) in a swampy area near Raccoon Run Trail in Lick Creek Park. College Station, Texas, June 29, 2018Raccoon Run, College Station, TX 77845, USA
Group of turquoise brittlegill mushrooms (Russula subgraminicolor) in a swampy area near Raccoon Run Trail in Lick Creek Park. College Station, Texas, June 29, 2018Raccoon Run, College Station, TX 77845, USA
Turquoise brittlegill mushrooms (Russula subgraminicolor)(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 29, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Turquoise brittlegill mushrooms (Russula subgraminicolor)(?) near a small creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 29, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Green brittlegill mushrooms Russula subgraminicolor together with other small mushrooms in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 1, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Green brittlegill mushrooms Russula subgraminicolor in muddy area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 1, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Green brittlegill mushrooms Russula subgraminicolor with yellow center on floodplain on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Underside of green brittlegill mushrooms Russula subgraminicolor on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Green brittlegill mushrooms Russula subgraminicolor in Lick Creek Park. College Station, Texas, October 28, 2021Iron Bridge Trail, College Station, Brazos County, Texas, United States
Green brittlegill mushrooms Russula subgraminicolor with a cross section in Lick Creek Park. College Station, Texas, October 28, 2021Iron Bridge Trail, College Station, Brazos County, Texas, United States
Green brittlegill mushrooms Russula subgraminicolor on Racoon Run Trail in Lick Creek Park. College Station, Texas, October 28, 2021Racoon Run Trail, College Station, Brazos County, Texas, United States
Caps of green brittlegill mushrooms Russula subgraminicolor(?) on Racoon Run Trail in Lick Creek Park. College Station, Texas, October 28, 2021Racoon Run Trail, College Station, Brazos County, Texas, United StatesObservations of the fungus Russula subgraminicolor in East and Central Texas reveal its presence in various locations, including Lick Creek Park and Sam Houston National Forest. The mushrooms were found growing in swampy areas, near creeks, and on floodplains, suggesting a preference for moist environments. They were observed in different colors, including turquoise and green, with some specimens having a yellow center. The fungus was seen hosting the mold fungus Syzygites megalocarpus on one occasion. Multiple sightings were recorded over several years, from June 2018 to October 2021, indicating a consistent presence of the species in the region. The observations also provide detailed descriptions of the mushrooms' habitats and physical characteristics, including cross-sections and undersides. Overall, the data suggest that Russula subgraminicolor is a common species in East and Central Texas, particularly in areas with abundant moisture.
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