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Lilac bolete

Fungi: Basidiomycota: Agaricomycetes: Boletales: Boletaceae: Xanthoconium separans (Peck) Halling & Both

Xanthoconium separans – lilac bolete

Synonyms: Boletus edulis, Boletus reticulatus, Boletus separans, Suillus separans.

Common name: lilac bolete.

Extract from Wikipedia article: Boletus separans is a species of bolete fungus in the family Boletaceae. It was described as new to science in 1873 by American mycologist Charles Horton Peck. In 1998, Roy Halling and Ernst Both transferred the bolete to the genus Xanthoconium. Molecular phylogenetic analysis published in 2013 shows that it is more closely related to Boletus sensu stricto than to Xanthoconium.

Czech: Hřib hnědofialový.

AI-generated description

Xanthoconium separans is a species of bolete fungus that grows in association with oak trees. In East and Central Texas, it typically fruits from June to October, producing medium-sized to large, brownish-gray caps with yellowish-brown pores. The stems are often long and slender, with a reticulate pattern. This fungus is commonly found in wooded areas, particularly under white oak and post oak, where it grows solitary or in small groups. Specimens from East and Central Texas have been reported to have caps ranging from 3-10 cm in diameter and stems up to 10 cm long.

Photos of this mushroom from East and Central Texas

Underside of <B>Xanthoconium separans</B> (Boletus separans) mushroom in Little Thicket Nature Sanctuary near Cleveland. Texas, <A HREF="../date-en/2021-06-26.htm">June 26, 2021</A>
LinkUnderside of Xanthoconium separans (Boletus separans) mushroom in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021
Location on mapsFM945, Cleveland, TX 77328, USA
Mushroom <B>Xanthoconium separans</B> (Boletus separans) on a forest path in Little Thicket Nature Sanctuary near Cleveland. Texas, <A HREF="../date-en/2021-06-26.htm">June 26, 2021</A>
LinkMushroom Xanthoconium separans (Boletus separans) on a forest path in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021
Location on mapsFM945, Cleveland, TX 77328, USA
Cross section of mushroom <B>Xanthoconium separans</B> (Boletus separans) in Little Thicket Nature Sanctuary near Cleveland. Texas, <A HREF="../date-en/2021-06-26.htm">June 26, 2021</A>
LinkCross section of mushroom Xanthoconium separans (Boletus separans) in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021
Location on mapsFM945, Cleveland, TX 77328, USA
Lilac bolete mushroom (<B>Xanthoconium separans</B>, Boletus separans) under oak, pine, magnolia, holly on Kirby Trail in Big Thicket National Preserve. Warren, Texas, <A HREF="../date-en/2021-09-25.htm">September 25, 2021</A>
LinkLilac bolete mushroom (Xanthoconium separans, Boletus separans) under oak, pine, magnolia, holly on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Location on mapsKirby Nature Trail, Kountze, TX 77625, USA
Underside of lilac bolete mushroom (<B>Xanthoconium separans</B>, Boletus separans) found under oak, pine, magnolia, holly on Kirby Trail in Big Thicket National Preserve. Warren, Texas, <A HREF="../date-en/2021-09-25.htm">September 25, 2021</A>
LinkUnderside of lilac bolete mushroom (Xanthoconium separans, Boletus separans) found under oak, pine, magnolia, holly on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Location on mapsKirby Nature Trail, Kountze, TX 77625, USA
Cross section of lilac bolete mushroom (<B>Xanthoconium separans</B>, Boletus separans) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, <A HREF="../date-en/2021-09-25.htm">September 25, 2021</A>
LinkCross section of lilac bolete mushroom (Xanthoconium separans, Boletus separans) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Location on mapsKirby Nature Trail, Kountze, TX 77625, USA
Close-up of lilac bolete mushroom (<B>Xanthoconium separans</B>, Boletus separans) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, <A HREF="../date-en/2021-09-25.htm">September 25, 2021</A>
LinkClose-up of lilac bolete mushroom (Xanthoconium separans, Boletus separans) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Location on mapsKirby Nature Trail, Kountze, TX 77625, USA
Mature bolete mushroom <B>Xanthoconium separans</B> (Boletus separans)(?) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, <A HREF="../date-en/2021-09-25.htm">September 25, 2021</A>
LinkMature bolete mushroom Xanthoconium separans (Boletus separans)(?) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Location on mapsKirby Nature Trail, Hardin County, Texas, United States

AI-generated summary of observations

Observations of Xanthoconium separans in East and Central Texas reveal the fungus growing in various environments. In Little Thicket Nature Sanctuary near Cleveland, it was found on a forest path and under trees, with images taken on June 26, 2021, showing its underside, cross-section, and overall appearance. Similarly, in Big Thicket National Preserve, Warren, Texas, the mushroom was spotted under oak, pine, magnolia, and holly trees on Kirby Trail on September 25, 2021. Close-up images of the lilac bolete's underside, cross-section, and mature specimen were also captured. The observations suggest that Xanthoconium separans thrives in woodland areas with diverse tree species, and can be found during the summer and early fall months in East and Central Texas. The fungus exhibits distinctive features, including a lilac-colored cap and yellow pores underneath.

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Acknowledgements

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