Synonyms: Boletus molluscus, Cristella mollusca, Fibuloporia mollusca, Leptoporus molluscus, Physisporus bombycinoides, Physisporus molluscus, Polyporus gordoniensis, Polyporus molluscus, Poria epiphylla, Poria gordoniensis, Poria mollusca.
Trechispora mollusca is a species of fungus that belongs to the family Hydnodontaceae. It is characterized by its soft, waxy, and pale-colored fruiting bodies that resemble tiny shells or mollusk shells. In East and Central Texas, Trechispora mollusca has been found growing on decaying wood, particularly on hardwoods such as oak and maple, in moist environments like streamsides and floodplains. The fungus is typically small, ranging from 1-5 mm in diameter, and has a smooth to wrinkled surface. Its spores are cylindrical and measure 6-10 μm in length.
Resupinate polypore fungus Trechispora mollusca (white) on decaying mushroom Ganoderma (could be G. meredithiae or G. martinicense), under pines, ground without grass, area had standing water in the past, but now dry (Ganoderma was uprooted by animals and completely dried) on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Lone Star Hiking Trail, Richards, TX 77873, USA
Underside of decaying mushroom Ganoderma (could be G. meredithiae or G. martinicense) with resupinate polypore fungus Trechispora mollusca (white) on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Lone Star Hiking Trail, Richards, TX 77873, USA
Resupinate polypore fungus Trechispora mollusca growing on decaying mushroom Ganoderma on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Lone Star Hiking Trail, Richards, TX 77873, USA
Pore surface of dried resupinate polypore fungus Trechispora mollusca growing on decaying mushroom Ganoderma on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Lone Star Hiking Trail, Richards, TX 77873, USA
Close-up of dried resupinate polypore fungus Trechispora mollusca growing on decaying mushroom Ganoderma on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Lone Star Hiking Trail, Richards, TX 77873, USA
Web-like mycelium of resupinate polypore fungus Trechispora mollusca growing on decaying mushroom Ganoderma on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021Lone Star Hiking Trail, Richards, TX 77873, USA
Resupinate polypore fungus Trechispora mollusca (white) on decaying mushroom Ganoderma (could be G. meredithiae or G. martinicense), taken from Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Dried resupinate polypore fungus Trechispora mollusca growing on decaying mushroom Ganoderma, taken from Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
White resupinate polypore mushroom Trechispora mollusca on an oak log near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, February 21, 202123404 Martha Williams Rd, Montgomery, TX 77356, USA
Margin of white resupinate polypore mushroom Trechispora mollusca on an oak log near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, February 21, 202123404 Martha Williams Rd, Montgomery, TX 77356, USA
Close-up of web-like margin of white resupinate polypore mushroom Trechispora mollusca on an oak log near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, February 21, 202123404 Martha Williams Rd, Montgomery, TX 77356, USA
Snowy white resupinate polypore mushroom Trechispora mollusca on an oak log near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, February 21, 202123404 Martha Williams Rd, Montgomery, TX 77356, USA
Texture of white resupinate polypore mushroom Trechispora mollusca on an oak log near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, February 21, 202123404 Martha Williams Rd, Montgomery, TX 77356, USA
Web-like corticioid mushroom Trechispora mollusca(?) on rotting oak wood in Lick Creek Park. College Station, Texas, March 2, 2021Raccoon Run, College Station, TX 77845, USA
Pores of white corticioid mushroom Trechispora mollusca(?) on rotting oak wood in Lick Creek Park. College Station, Texas, March 2, 2021Raccoon Run, College Station, TX 77845, USA
White web-like porous fungus Trechispora mollusca on a log on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, January 22, 2022Lone Star Hiking Trail, Montgomery County, Texas, United States
Close-up of white web-like porous fungus Trechispora mollusca on a log on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, January 22, 2022Lone Star Hiking Trail, Montgomery County, Texas, United States
Pore surface of web-like fungus Trechispora mollusca on a log on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, January 22, 2022Lone Star Hiking Trail, Montgomery County, Texas, United States
Corticioid fungus Trechispora mollusca on pore surface of an old bracket polypore mushroom, probably Southern Clam Shell (Fomes) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 29, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Close-up of corticioid fungus Trechispora mollusca on pore surface of an old bracket polypore mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 29, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Scratched pore surface of corticioid fungus Trechispora mollusca on pore surface of an old bracket polypore mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 29, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Pores of corticioid fungus Trechispora mollusca on pore surface of an old bracket polypore mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 29, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Old bracket polypore mushroom, probably Southern Clam Shell (Fomes), detached by hogs, with corticioid fungus Trechispora mollusca on its underside on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 29, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Soft web-like surface of corticioid fungus Trechispora mollusca on pore surface of an old bracket polypore mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 29, 2022Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Spores of corticioid mushroom Trechispora mollusca from old polypore, collected from Caney Creek section of Sam Houston National Forest 1/29/2022. Texas, January 30, 2022
Spore size 3.3 - 3.7 × 2.5 - 3.1 µm, length to width ratio Q = 1.2 - 1.4.The fungus Trechispora mollusca was observed in East and Central Texas on multiple occasions between January 2021 and January 2022. It was found growing on decaying mushrooms, oak logs, and rotting wood in various locations, including Sam Houston National Forest and Lick Creek Park. The fungus was typically white and had a web-like or resupinate appearance. It was often found on the underside of substrates or on pore surfaces of old bracket polypore mushrooms. The observations included close-ups of the fungus's texture, margin, and spores. The fungus was also found in different stages of growth, from fresh to dried. Overall, the observations suggest that Trechispora mollusca is a common species in the region, capable of growing on a variety of substrates in different environments.
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