Fungi: Basidiomycota: Agaricomycetes: Boletales: Boletaceae: Austroboletus subflavidus (Murrill) Wolfe

Austroboletus subflavidus – White Coarsely-ribbed Bolete

Synonyms: Boletellus subflavidus, Boletus subflavidus, Porphyrellus subflavidus, Tylopilus subflavidus.

Common name: White Coarsely-ribbed Bolete.

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.

Photos of this mushroom from East and Central Texas

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

Cap of white coarsely-ribbed bolete mushroom (Austroboletus subflavidus) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Side view of white coarsely-ribbed bolete mushroom (Austroboletus subflavidus) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Close-up of white coarsely-ribbed bolete mushroom (Austroboletus subflavidus) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Finely pimply-verrucose spores of bolete mushrooms Austroboletus subflavidus (spore print brown) collected near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2022

Coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 14, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Side view of coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 14, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Stem of coarsely-ribbed bolete mushroom (Austroboletus subflavidus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 14, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) together with Boletellus ananas on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 14, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Spores of bolete mushrooms Austroboletus subflavidus (in KOH, spore print dark is rusty brown) collected in Pole Creek area of Sam Houston National Forest near Montgomery. Texas, September 16, 2022

Spores of bolete mushrooms Austroboletus subflavidus (stacked image) collected in Pole Creek area of Sam Houston National Forest near Montgomery. Texas, September 16, 2022

Cracked cap of a mature coarsely-ribbed bolete mushroom (Austroboletus subflavidus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 18, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Mmature coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 18, 2022
Lone Star Hiking Trail, Montgomery County, Texas, United States

Spores of mature bolete mushrooms Austroboletus subflavidus at low magnification, collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 18, 2022

Spores of mature bolete mushrooms Austroboletus subflavidus collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 18, 2022

Comments

• Data for this species were obtained from the dataset https://www.gbif.org.
• There is a Wikipedia article about this species.

Download the map and open it in Google Earth for more accurate viewing.

Links

• List of mushrooms with photos.
• Photos grouped by dates.
• List of Latin names.
• List of common names.
• Locations on a map.
• Scripts for generating the web pages.
• Mushrooms from Texas, old version of web page.
• Mushrooms of Russia.
• Collection of mushrooms from Qatar.
• Picture archives.
• Home page of A. Sergeev.

Acknowledgements

Mushroom Observer and Facebook for learning names of local mushrooms.

This web page was generated by a special script.