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White Coarsely-ribbed Bolete

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

<B>Austroboletus subflavidus</B> mushroom on Forest Service Road 203 in Sam Houston National Forest. Richards, Texas, <A HREF="../date-en/2013-09-28.htm">September 28, 2013</A>
LinkAustroboletus subflavidus mushroom on Forest Service Road 203 in Sam Houston National Forest. Richards, Texas, September 28, 2013
Location on mapsForest Service Road 203, Sam Houston National Forest, Montgomery, TX 77356, USA
<B>Austroboletus subflavidus</B> mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, <A HREF="../date-en/2013-10-19.htm">October 19, 2013</A>
LinkAustroboletus subflavidus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 19, 2013
Location on mapsForest Service Road 203, Sam Houston National Forest, Montgomery, TX 77356, USA
<B>Austroboletus subflavidus</B> mushrooms on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, <A HREF="../date-en/2018-07-13.htm">July 13, 2018</A>
LinkAustroboletus subflavidus mushrooms on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
Group of <B>Austroboletus subflavidus</B> mushrooms in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, <A HREF="../date-en/2018-07-13.htm">July 13, 2018</A>
LinkGroup 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
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
American solitary Lepidella (Amanita subsolitaria)(?) and <B>Austroboletus subflavidus</B> mushrooms in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, <A HREF="../date-en/2018-07-15.htm">July 15, 2018</A>
LinkAmerican 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
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
Close up of <B>Austroboletus subflavidus</B> mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, <A HREF="../date-en/2018-07-15.htm">July 15, 2018</A>
LinkClose 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
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
Side view of <B>Austroboletus subflavidus</B> mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, <A HREF="../date-en/2018-07-15.htm">July 15, 2018</A>
LinkSide 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
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
<B>Austroboletus subflavidus</B> mushroom in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, <A HREF="../date-en/2018-09-15.htm">September 15, 2018</A>
LinkAustroboletus 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
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
<B>Austroboletus subflavidus</B> mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, <A HREF="../date-en/2018-09-29.htm">September 29, 2018</A>
LinkAustroboletus subflavidus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
<B>Austroboletus subflavidus</B> mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, <A HREF="../date-en/2018-09-30.htm">September 30, 2018</A>
LinkAustroboletus subflavidus mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 30, 2018
Location on mapsLittle Lake Creek Loop Trail, Montgomery, TX 77356, USA
White coarsely-ribbed bolete mushrooms (<B>Austroboletus subflavidus</B>) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, <A HREF="../date-en/2020-08-05.htm">August 5, 2020</A>
LinkWhite coarsely-ribbed bolete mushrooms (Austroboletus subflavidus) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 5, 2020
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
Dissected white coarsely-ribbed bolete mushrooms (<B>Austroboletus subflavidus</B>) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, <A HREF="../date-en/2020-08-05.htm">August 5, 2020</A>
LinkDissected 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
Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
Cap of white coarsely-ribbed bolete mushroom (<B>Austroboletus subflavidus</B>) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-08-31.htm">August 31, 2022</A>
LinkCap 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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Side view of white coarsely-ribbed bolete mushroom (<B>Austroboletus subflavidus</B>) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-08-31.htm">August 31, 2022</A>
LinkSide 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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Close-up of white coarsely-ribbed bolete mushroom (<B>Austroboletus subflavidus</B>) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-08-31.htm">August 31, 2022</A>
LinkClose-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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Finely pimply-verrucose spores of bolete mushrooms <B>Austroboletus subflavidus</B> (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
LinkFinely 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 (<B>Austroboletus subflavidus</B>) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-09-14.htm">September 14, 2022</A>
LinkCoarsely-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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Side view of coarsely-ribbed bolete mushrooms (<B>Austroboletus subflavidus</B>) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-09-14.htm">September 14, 2022</A>
LinkSide 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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Stem of coarsely-ribbed bolete mushroom (<B>Austroboletus subflavidus</B>) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-09-14.htm">September 14, 2022</A>
LinkStem 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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Coarsely-ribbed bolete mushrooms (<B>Austroboletus subflavidus</B>) together with Boletellus ananas on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-09-14.htm">September 14, 2022</A>
LinkCoarsely-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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Spores of bolete mushrooms <B>Austroboletus subflavidus</B> (in KOH, spore print dark is rusty brown) collected in Pole Creek area of Sam Houston National Forest near Montgomery. Texas, September 16, 2022
LinkSpores 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 <B>Austroboletus subflavidus</B> (stacked image) collected in Pole Creek area of Sam Houston National Forest near Montgomery. Texas, September 16, 2022
LinkSpores 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 (<B>Austroboletus subflavidus</B>) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-09-18.htm">September 18, 2022</A>
LinkCracked 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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Mmature coarsely-ribbed bolete mushrooms (<B>Austroboletus subflavidus</B>) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, <A HREF="../date-en/2022-09-18.htm">September 18, 2022</A>
LinkMmature 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
Location on mapsLone Star Hiking Trail, Montgomery County, Texas, United States
Spores of mature bolete mushrooms <B>Austroboletus subflavidus</B> 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
LinkSpores 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 <B>Austroboletus subflavidus</B> collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 18, 2022
LinkSpores 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

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