Extract from Wikipedia article: Stereum sanguinolentum is a species of fungus in the Stereaceae family. A plant pathogen, it causes red heart rot, a red discoloration on conifers, particularly spruces or Douglas-firs. Fruit bodies are produced on dead wood, or sometimes on dead branches of living trees. They are a thin leathery crust of the wood surface. Fresh fruit bodies will bleed a red-colored juice if injured, reflected in the common names bleeding Stereum or the bleeding conifer parchment. It can be the host of the parasitic jelly fungus Tremella encephala.
Bleeding conifer crust fungus (Stereum sanguinolentum) on pine twigs on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, January 23, 2021 Forest Service Rd 213, Huntsville, TX 77340, USA
Corticioid fungus bleeding conifer crust (Stereum sanguinolentum) on pine twigs on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, January 23, 2021 Forest Service Rd 213, Huntsville, TX 77340, USA
Bleeding conifer crust fungus (Stereum sanguinolentum) on a fallen pine branch in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, July 10, 2021 Big Creek Trail, Shepherd, TX 77371, USA
Scratched surface of bleeding conifer crust fungus (Stereum sanguinolentum) on a fallen pine branch in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, July 10, 2021 Big Creek Trail, Shepherd, TX 77371, USA
Close-up of bleeding conifer crust fungus (Stereum sanguinolentum) on a fallen pine branch in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, July 10, 2021 Big Creek Trail, Shepherd, TX 77371, USA
Texture of bleeding conifer crust fungus (Stereum sanguinolentum) on a fallen pine branch in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, July 10, 2021 Big Creek Trail, Shepherd, TX 77371, USA