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.
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.
Underside of Xanthoconium separans (Boletus separans) mushroom in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021
Mushroom Xanthoconium separans (Boletus separans) on a forest path in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021
Cross section of mushroom Xanthoconium separans (Boletus separans) in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021
Lilac bolete mushroom (Xanthoconium separans, Boletus separans) under oak, pine, magnolia, holly on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Underside 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
Cross section of lilac bolete mushroom (Xanthoconium separans, Boletus separans) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Close-up of lilac bolete mushroom (Xanthoconium separans, Boletus separans) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Mature bolete mushroom Xanthoconium separans (Boletus separans)(?) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, September 25, 2021
Underside of lilac bolete mushroom (Xanthoconium separans, Boletus separans) collected during mushroom walk in Watson Rare Native Plant Preserve. Warren, Texas, November 16, 2024
Lilac bolete mushroom (Xanthoconium separans, Boletus separans) collected during mushroom walk in Watson Rare Native Plant Preserve. Warren, Texas, November 16, 2024
Lilac bolete mushroom (Xanthoconium separans, Boletus separans) on black background collected during mushroom walk in Watson Rare Native Plant Preserve. Warren, Texas, November 16, 2024
Cap of a large bolete mushroom Xanthoconium separans (Boletus separans) south from Northern Trailhead of the Turkey Creek Trail of Big Thicket National Preserve. Warren, Texas, November 16, 2024
Underside of a large bolete mushroom Xanthoconium separans (Boletus separans) south from Northern Trailhead of the Turkey Creek Trail of Big Thicket National Preserve. Warren, Texas, November 16, 2024
Cross section of a large bolete mushroom Xanthoconium separans (Boletus separans) south from Northern Trailhead of the Turkey Creek Trail of Big Thicket National Preserve. Warren, Texas, November 16, 2024
Spores (in KOH) of bolete mushroom Xanthoconium separans (Boletus separans) (spore print light brown, turns purplish in KOH) collected a day before from Turkey Creek Trail in Big Thicket. Texas, November 17, 2024Observations 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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