Synonyms: Agaricus cinnamomeus, Cortinarius cinnamomeus, Cortinarius miltinus, Cortinarius phoeniceus, Dermocybe semisanguinea, Flammula cinnamomea.
Common name: surprise webcap.
Extract from Wikipedia article: Cortinarius semisanguineus is a medium-sized mushroom with a pale brown to ochre cap, and bright blood-red gills. It belongs to the genus Cortinarius, a group collectively known as webcaps. It is found growing in conifer plantations, and has recently been given the fanciful common name of surprise webcap. In the past it has been called the red-gilled webcap.
Chinese: 半血红丝膜菌, Estonian: Verkjas vöödik, Finnish: Verihelttaseitikki, German: Blutblättriger Hautkopf, Lithuanian: Raudonlakštis nuosėdis, Polish: Zasłonak purpurowoblaszkowy, Russian: Паутинник краснопластинковый, Swedish: Rödskivig kanelspindling, Ukrainian: Павутинник напівкривавий, Welsh: Cap gweog lledwaetgoch.
Cortinarius semisanguineus is a small to medium-sized mushroom with a reddish-brown cap and pale yellow to greenish-yellow gills. It grows in association with coniferous and deciduous trees, particularly pine and oak. In East and Central Texas, it typically fruits from September to November, often in sandy or clay soils under pine and mixed hardwoods, and can be found in wooded areas, including the Lost Maples region and the Piney Woods. The cap is 1-4 cm in diameter, bell-shaped to convex, and has a distinctive reddish-brown color with a yellowish or greenish tint on the margins. The stipe is slender, 2-6 cm long, and colored similarly to the cap.
Underside of surprise webcap mushroom (Cortinarius semisanguineus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, January 23, 2021
Four Notch Loop Trail, Huntsville, TX 77340, USA
Gills of surprise webcap mushroom (Cortinarius semisanguineus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, January 23, 2021Four Notch Loop Trail, Huntsville, TX 77340, USA
Cross section of surprise webcap mushroom (Cortinarius semisanguineus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, January 23, 2021Four Notch Loop Trail, Huntsville, TX 77340, USA
Cap of surprise webcap mushroom (Cortinarius semisanguineus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, January 23, 2021Four Notch Loop Trail, Huntsville, TX 77340, USA
Surprise webcap mushrooms (Cortinarius semisanguineus(?)) under pines on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Underside of surprise webcap mushrooms (Cortinarius semisanguineus(?)) under pines on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Cross section of surprise webcap mushrooms (Cortinarius semisanguineus(?)) under pines on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Surprise webcap mushrooms (Cortinarius semisanguineus) near Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Surprise webcap mushrooms (Cortinarius semisanguineus) among pine needles near Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Underside of surprise webcap mushrooms (Cortinarius semisanguineus) near Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Gills of surprise webcap mushrooms (Cortinarius semisanguineus) near Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Tissues of gills of webcap mushrooms Cortinarius semisanguineus collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Tissues and spores of webcap mushrooms Cortinarius semisanguineus collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Basidia and spores of webcap mushrooms Cortinarius semisanguineus collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Details of basidia and spores of webcap mushrooms Cortinarius semisanguineus collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Basidia and spores of webcap mushrooms Cortinarius semisanguineus at higher magnification, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Basidia and spores of webcap mushrooms Cortinarius semisanguineus under microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Spores of webcap mushrooms Cortinarius semisanguineus collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022
Surprise webcap mushroom (Cortinarius semisanguineus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, February 19, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Underside of surprise webcap mushroom (Cortinarius semisanguineus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, February 19, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Gills of surprise webcap mushroom (Cortinarius semisanguineus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, February 19, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Spores of webcap mushroom Cortinarius semisanguineus (in KOH, spore print orange-brown), collected in Sam Houston National Forest. Texas, February 19, 2023Observations of Cortinarius semisanguineus in East and Central Texas reveal the fungus grows under pines, with sightings on Four Notch Loop Trail and Richards Loop Trail in Sam Houston National Forest. The mushrooms have distinctive features, including a cap and gills, with the underside of the cap showing a web-like pattern. Cross-sections of the mushroom display its internal structure. Spore prints are orange-brown, and microscopic examination reveals basidia and spores. The fungus was observed on multiple occasions between January 2021 and February 2023, with consistent characteristics noted across different locations and times. Specific details of the mushroom's tissues, gills, and spores were also recorded, providing a comprehensive understanding of Cortinarius semisanguineus in this region. The observations suggest the fungus is relatively common in the area, particularly under pine trees.
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