Synonym: Boletus luteus.
Common names: Booted Suillus, Baggy-veiled Suillus.
Extract from Wikipedia article: Suillus cothurnatus is a species of mushroom in the genus Suillus. Found in Malaysia, Brazil, and North America, it was first described scientifically by mycologist Rolf Singer in 1945.
Latvian: Zābakotā sviestbeka.
Suillus cothurnatus is a species of bolete fungus that grows in association with larch trees. In East and Central Texas, it typically fruits in the fall, often near planted larch trees in urban landscapes and parks. The cap is 3-8 cm broad, brown to reddish-brown, and sometimes cracking to reveal yellow flesh. The pore surface is yellow, becoming olive-yellow with age, and the stalk is similar in color to the cap, often with a whitish base. It can be found in the wild, but its presence is generally limited to areas where larch trees have been introduced.
Underside of Suillus cothurnatus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018
Lone Star Hiking Trail, Montgomery County, Texas, United States
Suillus cothurnatus mushrooms on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018Lone Star Hiking Trail, Montgomery County, Texas, United States
Suillus cothurnatus mushrooms in a pine forest on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 30, 2018W Fork Trail, Montgomery, TX 77356, USA
Bolete mushrooms Suillus cothurnatus at Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 2, 2019Lone Star Hiking Trail, Shepherd, TX 77371, USA
Bolete mushrooms Suillus cothurnatus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 19, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Partially dry booted Suillus mushrooms (Suillus cothurnatus) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, October 1, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Underside of booted Suillus mushroom (Suillus cothurnatus) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, July 23, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Bolete mushrooms Suillus cothurnatus on Richards Loop Trail in Sam Houston National Forest. Texas, October 13, 2021Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Booted Suillus mushrooms (Suillus cothurnatus) on Richards Loop Trail in Sam Houston National Forest. Texas, December 9, 2021Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Underside of bolete mushroom Suillus cothurnatus on Richards Loop Trail in Sam Houston National Forest. Texas, December 9, 2021Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Cross section of bolete mushrooms Suillus cothurnatus on Richards Loop Trail in Sam Houston National Forest. Texas, December 9, 2021Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Bolete mushrooms booted Suillus (Suillus cothurnatus) in Watson Rare Native Plant Preserve. Warren, Texas, November 2, 2022716, Red Oak Lane, Tyler County, Texas, 77664, United States
Bolete mushrooms Suillus cothurnatus (spore print light brown) on a sand mound on side of road FS 203 on Richards Loop Trail in Sam Houston National Forest. Texas, April 25, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Underside of bolete mushrooms Suillus cothurnatus at road FS 203 on Richards Loop Trail in Sam Houston National Forest. Texas, April 25, 2023FS 203, Montgomery County, Texas, 77873, United States
Spores (in KOH) of bolete mushrooms Suillus cothurnatus collected in Sam Houston National Forest. Texas, April 25, 2023Observations of Suillus cothurnatus in East and Central Texas reveal the fungus grows in pine forests, often near trails. Multiple sightings occurred on Little Lake Creek Loop Trail and Richards Loop Trail in Sam Houston National Forest, with mushrooms found in various stages of growth. The bolete mushrooms were observed from September to December, suggesting a fall fruiting period. Some observations noted the underside of the mushroom, while others showed cross-sections or spore prints, which were light brown. The fungus was also spotted in Warren, Texas, at the Watson Rare Native Plant Preserve. Spores collected from Sam Houston National Forest were examined in KOH, providing further detail about the species' characteristics. The sightings span several years, from 2018 to 2023, indicating a consistent presence of Suillus cothurnatus in the region.
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