Synonyms: Aurantioporus fissilis, Aurantiporus fissilis, Leptoporus albosordescens, Leptoporus fissilis, Phaeolus albosordescens, Polyporus albosordescens, Polyporus cavernosus, Polyporus fissilis, Polyporus fuscomutans, Polyporus pomaceus, Spongipellis fissilis, Tyromyces albosordescens, Tyromyces fissilis.
Common name: greasy bracket.
Pappia fissilis is a species of fungus that belongs to the family Polyporaceae. It is a wood-decaying fungus that grows on dead trees, particularly oak and elm. In East and Central Texas, Pappia fissilis has been found growing on stumps, logs, and fallen branches, often in wooded areas with rich soil. The fungus produces annual to biennial growths, with caps that are 2-8 cm in diameter, grayish-brown to dark brown in color, and have a distinctive fissured or cracked surface. The pore surface is white to light brown, and the pores are small and rounded. Pappia fissilis is considered a rare fungus in Texas, but it can be locally common in certain areas, particularly in the eastern part of the state where the climate is more humid.
Young white greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis, Tyromyces fissilis) with guttation on a big fallen oak near the creek in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 20, 2019
Lone Star Hiking Trail, Shepherd, TX 77371, USA
Dissected white greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) from on a big fallen oak near the creek in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 20, 2019Lone Star Hiking Trail, Shepherd, TX 77371, USA
White greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a big fallen elm, magnolia or may be oak near the creek in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, September 12, 2020Lone Star Hiking Trail, Shepherd, TX 77371, USA
Underside of greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a big fallen tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, September 12, 2020Lone Star Hiking Trail, Shepherd, TX 77371, USA
Large pores of greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a big fallen tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, September 12, 2020Lone Star Hiking Trail, Shepherd, TX 77371, USA
Cross section of greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a big fallen tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, September 12, 2020Lone Star Hiking Trail, Shepherd, TX 77371, USA
Cap of greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a big fallen tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, September 12, 2020Lone Star Hiking Trail, Shepherd, TX 77371, USA
Giant white cheese polypore (greasy bracket) mushroom (Aurantiporus fissilis, Pappia fissilis) on an oak with small leaves, living, around 1 m thick, 1.5 m over the ground in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021Lone Star Hiking Trail, San Jacinto County, Texas, United States
Water droplets under a giant greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a large oak in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021Lone Star Hiking Trail, San Jacinto County, Texas, United States
Side view of a giant greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a large oak in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021Lone Star Hiking Trail, Coldspring, TX 77331, USA
Dissected cap of a giant greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a large oak in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021Lone Star Hiking Trail, San Jacinto County, Texas, United States
Large pores of a giant greasy bracket mushroom (Aurantiporus fissilis, Pappia fissilis) on a large oak in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021Lone Star Hiking Trail, Coldspring, TX 77331, USAObservations of the fungus Pappia fissilis in East and Central Texas reveal its growth habits and characteristics. The mushroom is found growing on fallen trees, including oak, elm, and magnolia, near creeks in Big Creek Scenic Area of Sam Houston National Forest. It appears as a white, greasy bracket with guttation, and has large pores on its underside. The fungus can grow quite large, with some specimens found on living oaks around 1m thick. Water droplets are often observed under the mushroom's cap, and its cross-section reveals a distinctive structure. Dissected caps show the internal features of the fungus, and its growth on trees is documented over several years, from September to October. The observations highlight the fungus's unique characteristics and habits in its natural habitat.
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