Synonyms: Agaricus chrysolithus, Agaricus leoninus, Agaricus sororiatus, Gymnopus leoninus, Hyporrhodius leoninus, Pluteus fayodii, Pluteus luteomarginatus, Pluteus sororiatus, Rhodosporus leoninus.
Common name: lion shield.
Extract from Wikipedia article: Pluteus leoninus, commonly known as lion shield, can occasionally be found growing on dead wood in Europe and North Africa. The underside of the cap is typical of the genus Pluteus — the gills are pale, soon becoming pink when the spores ripen. But the upper surface is a bright tawny or olivaceous yellow. The species name leoninus (meaning leonine) refers to this cap colour.
Basque: Pluteo hori, Dutch: Goudgele hertenzwam, Egyptian Arabic: بلوتيس ليونينوس, Estonian: Lõvinapsik, Finnish: Keltalahorusokas, Hungarian: Sárga csengettyűgomba, Polish: Drobnołuszczak żółtawy, Russian: Плютей львино-жёлтый, Swedish: Gulskölding.
Pluteus leoninus is a small to medium-sized agaric fungus with a bell-shaped to convex cap that ranges in color from yellowish-brown to tawny, often with a darker center. The gills are free, crowded, and pinkish-gray to gray-brown. It grows in clusters or scattered on decaying wood, especially hardwoods, in urban and natural areas. In East and Central Texas, Pluteus leoninus has been found fruiting from spring to fall, typically in wooded regions with rich soil and abundant deciduous tree species, such as oak and elm. The fungus is considered common in the region, particularly in areas with high levels of moisture and humidity.
Lion shield mushrooms (Pluteus leoninus) on completely rotten fallen oak on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
San Jacinto County, Texas, United States
Young lion shield mushrooms (Pluteus leoninus) on completely rotten oak wood on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Lion shield mushrooms (Pluteus leoninus) on a fallen and decomposed oak on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Caps of lion shield mushrooms (Pluteus leoninus) on a fallen oak on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Side view of lion shield mushrooms (Pluteus leoninus) on a fallen oak on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Upper view of lion shield mushrooms (Pluteus leoninus) on a fallen oak on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Olivaceous yellow mushrooms lion shield (Pluteus leoninus) on a fallen oak on Dillo Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
Basidia at low magnification of lion shield mushrooms (Pluteus leoninus) from a fallen oak, collected in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
Basidia and cystidia of lion shield mushrooms (Pluteus leoninus) from a fallen oak, collected in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
Basidia with spores of lion shield mushrooms (Pluteus leoninus) from a fallen oak, collected in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
Spores (in KOH) of lion shield mushrooms (Pluteus leoninus) from a fallen oak (spore print pink, gills turn brown after drying), collected in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024Multiple observations of Pluteus leoninus were made on Dillo Trail in Little Thicket Nature Sanctuary, Cleveland, Texas, on March 23, 2024. The fungus was found growing on completely rotten fallen oak wood, with various stages of development observed, from young to mature mushrooms. The caps of the mushrooms were noted, as well as their side and upper views. Microscopic examination revealed details such as basidia, cystidia, and spores, which were observed at low magnification and in KOH. The spore print was pink, and the gills turned brown after drying. The mushrooms were described as having an olivaceous yellow color. All observations were made on fallen oak, indicating a possible association between the fungus and this type of wood.
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