Extract from Wikipedia article: Austroboletus subflavidus is a species of bolete fungus in the family Boletaceae. It is found in eastern North America, where it fruits near oak and pine trees. Originally described as a species of Tylopilus by American mycologist William Murrill in 1938, it was transferred to the genus Austroboletus by Carl B. Wolfe in 1980. The fruit body has a white to yellowish convex to flattened cap measuring 3–10 cm (1.2–3.9 in) in diameter. The pores on the cap underside, which measure about 1 mm wide, are initially white to grayish before becoming pinkish. The coarsely reticulate and pitted stipe measures 4.5–14.5 cm (1.8–5.7 in) long by 0.7–3 cm (0.3–1.2 in). The spore print is reddish brown; spores are spindle-shaped (fusoid) with dimensions of 15–20 by 6–9 μm.
Austroboletus subflavidus mushroom on Forest Service Road 203 in Sam Houston National Forest. Richards, Texas, September 28, 2013 Forest Service Road 203, Sam Houston National Forest, Montgomery, TX 77356, USA
Austroboletus subflavidus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 19, 2013 Forest Service Road 203, Sam Houston National Forest, Montgomery, TX 77356, USA
Austroboletus subflavidus mushrooms on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Group of Austroboletus subflavidus mushrooms in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
American solitary Lepidella (Amanita subsolitaria)(?) and Austroboletus subflavidus mushrooms in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 15, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Close up of Austroboletus subflavidus mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 15, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Side view of Austroboletus subflavidus mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 15, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Austroboletus subflavidus mushroom in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, September 15, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Austroboletus subflavidus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Austroboletus subflavidus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 30, 2018 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
White coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 5, 2020 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Dissected white coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 5, 2020 Lone Star Hiking Trail, Montgomery, TX 77356, USA