Common name: Blue-green Cracking Russula.
Extract from Wikipedia article: Russula parvovirescens is a basidiomycete mushroom of the genus Russula. Found in the eastern United States, it was described as new to science in 2006. It is similar in appearance to the more widespread Russula virescens and R. crustosa, but can be distinguished from those species by its smaller stature, and microscopically by the voluminous terminal cells of the cap cuticle.
Russula parvovirescens is a small to medium-sized mushroom with a greenish-blue to blue-green cap, often with yellowish or brownish tones, and white to cream-colored gills and stem. It typically grows in association with oak trees. In East and Central Texas, it has been found fruiting from May to October, often in wooded areas with rich soil and abundant leaf litter, particularly under live oak and post oak. The cap ranges from 2-6 cm in diameter, and the stem is usually 2-5 cm long and 0.5-1.5 cm thick.
Brittlegill mushroom Russula parvovirescens on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, September 22, 2018
Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Violet cap of brittlegill mushroom Russula parvovirescens in Lick Creek Park. College Station, Texas, July 5, 2019Iron Bridge Trail, College Station, TX 77845, USA
Brittlegill mushrooms Russula parvovirescens under small oaks in Lick Creek Park. College Station, Texas, July 5, 2019Iron Bridge Trail, College Station, TX 77845, USA
Brittlegill mushrooms Russula parvovirescens in Lick Creek Park. College Station, Texas, July 5, 2019Iron Bridge Trail, College Station, TX 77845, USA
Blue-green cracking Russula mushrooms (Russula parvovirescens) in Lick Creek Park. College Station, Texas, May 26, 2020Iron Bridge Trail, College Station, TX 77845, USA
Blue-green cracking Russula mushrooms (Russula parvovirescens) with mold fungus Syzygites megalocarpus in Lick Creek Park. College Station, Texas, June 16, 2021Iron Bridge Trail, College Station, TX 77845, USA
Blue-green cracking Russula mushroom (Russula parvovirescens) together with cleft-foot Amanita (Amanita brunnescens) under small oaks in Lick Creek Park. College Station, Texas, June 30, 2021Iron Bridge Trail, College Station, TX 77845, USA
Blue-green cracking Russula mushrooms (Russula parvovirescens)(?) on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, July 2, 2021Yaupon Loop, College Station, TX 77845, USA
Side view of blue-green cracking Russula mushrooms (Russula parvovirescens)(?) on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, July 2, 2021Yaupon Loop, College Station, TX 77845, USA
Blue-green cracking Russula mushrooms (Russula parvovirescens)(?) under small oaks and Yaupon in Lick Creek Park. College Station, Texas, July 3, 2021Yaupon Loop, College Station, TX 77845, USA
Cap of blue-green cracking Russula mushroom (Russula parvovirescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 5, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Blue-green cracking Russula mushroom (Russula parvovirescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 5, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Mature blue-green cracking Russula mushrooms (Russula parvovirescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 5, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Gills of a mature blue-green cracking Russula mushroom (Russula parvovirescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 5, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Upper and side views of mature blue-green cracking Russula mushrooms (Russula parvovirescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 5, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Cap of a mature blue-green cracking Russula mushroom (Russula parvovirescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 5, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United StatesObservations of the fungus Russula parvovirescens in East and Central Texas reveal its presence in various locations, including Sam Houston National Forest and Lick Creek Park. The mushroom has been spotted growing under small oaks and Yaupon, with caps exhibiting violet, blue-green, and cracking patterns. It has been observed in different stages of maturity, from young to mature, and sometimes accompanied by mold fungus Syzygites megalocarpus. The mushrooms have been found on trails such as Caney Creek Trail and Yaupon Loop Trail, and their gills have been documented. The observations span several years, from 2018 to 2023, and showcase the variability in appearance and growth habits of Russula parvovirescens in the region. Repeat sightings in Lick Creek Park suggest that the species is established in the area.
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