Synonyms: Cucurbitaria botryosa, Discosphaera rubiginosa, Euhypoxylon rubiginosum, Gibberidea botryosa, Hypoxylon botryosum, Hypoxylon botrys, Hypoxylon florideum, Hypoxylon stereoides, Sphaeria botryosa, Sphaeria granulosa, Sphaeria multiformis, Sphaeria rubiginosa, Stromatosphaeria rubiginosa.
Common name: rusty woodwart.
Yellow corticioid fungus (Hypoxylon rubiginosum(?), young stage) that looks like sprayed paint on underside of an oak log in a dried shallow creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 19, 2018
Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Close up of a yellow fungus (Hypoxylon rubiginosum(?), young stage) that looks like sprayed paint on underside of an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 19, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow corticioid fungus (Hypoxylon rubiginosum(?), young stage) that looks like sprayed paint on underside of an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 19, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow corticioid fungus (Hypoxylon rubiginosum(?), young stage) on underside of an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 19, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Thin yellow corticioid fungus (Hypoxylon rubiginosum(?), young stage) on underside of a decorticated oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 19, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Thin yellow corticioid fungus (Hypoxylon rubiginosum(?), young stage) covering underside of a decorticated oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 19, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow crust fungus Hypoxylon rubiginosum(?) on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 26, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Spreading yellow and dark-brown fungus Hypoxylon rubiginosum(?) on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow and dark-brown crust fungus Hypoxylon rubiginosum(?) on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow and dark-brown Hypoxylon rubiginosum(?) corticioid fungus on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow and dark-brown Hypoxylon rubiginosum(?) crust fungus spreading on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Hypoxylon rubiginosum(?) crust fungus on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Yellow and dark-brown Hypoxylon rubiginosum(?) fungus on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Close up of Hypoxylon rubiginosum(?) crust fungus on underside of a piece of wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, June 9, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Crust fungus Hypoxylon rubiginosum(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 31, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Crust fungus Hypoxylon rubiginosum(?) on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 31, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Fungus Hypoxylon rubiginosum(?) on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 31, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Crust fungus Hypoxylon rubiginosum(?) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, September 7, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Crust fungus Hypoxylon rubiginosum(?) on a log on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, September 7, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Fungus Hypoxylon rubiginosum(?) on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 14, 2019LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Crust fungus Hypoxylon rubiginosum(?) on a fallen tree branch on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 26, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Texture of corticioid fungus Hypoxylon rubiginosum(?) on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 26, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Details of corticioid fungus Hypoxylon rubiginosum(?) on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 26, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Crust fungus Rusty woodwart (Hypoxylon rubiginosum)(?) on a dry piece of wood in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 30, 2022Washington-on-the-Brazos State Historic Site, Farm-to-Market Road 1155, Washington, Washington County, Texas, 77880, United States
Orange crust fungus Hypoxylon rubiginosum on a fallen oak branch without bark on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, April 2, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Orange crust fungus Hypoxylon rubiginosum with velvety anamorph (asexual stage) at its margins on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, April 2, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Close-up of crust fungus Hypoxylon rubiginosum with light brown fluffy anamorph (asexual stage) at its margins on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, April 2, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Pattern of orange crust fungus Hypoxylon rubiginosum on a fallen oak branch without bark on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, April 2, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Close-up of crust fungus Hypoxylon rubiginosum and light brown anamorph (asexual stage) at its margins on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, April 2, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Fungus Hypoxylon rubiginosum together with soft light brown anamorph (asexual stage) at its margins on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, April 2, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Conidiophores and spores (conidia) (in Melzer) from soft light brown anamorph (asexual stage) of fungus Hypoxylon rubiginosum collected in Sam Houston National Forest near Richards. Texas, April 2, 2023
Conidiophores and conidia (in Melzer) from soft light brown anamorph (asexual stage) of fungus Hypoxylon rubiginosum collected in Sam Houston National Forest near Richards. Texas, April 2, 2023
Spore size 4.65 - 5.4 × 3.1 - 3.4 µm, length to width ratio Q = 1.5 - 1.7.
Conidiophores and conidia (in KOH) from smooth orange stuff covering fungus Hypoxylon rubiginosum, collected in Sam Houston National Forest near Richards. Texas, April 2, 2023
Conidiospores (in Melzer) from soft light brown anamorph (asexual stage) of fungus Hypoxylon rubiginosum, collected a day before in Sam Houston National Forest near Richards. Texas, April 3, 2023
Conidia (in Melzer) from soft light brown anamorph (asexual stage) of fungus Hypoxylon rubiginosum together with spores of some Ascomycete, collected a day before in Sam Houston National Forest near Richards. Texas, April 3, 2023
Conidia from soft light brown anamorph (asexual stage) of fungus Hypoxylon rubiginosum together with a large septate spore of some Ascomycete, collected a day before in Sam Houston National Forest near Richards. Texas, April 3, 2023
Conidiospores (in lugol) from soft light brown anamorph (asexual stage) of fungus Hypoxylon rubiginosum, collected a day before in Sam Houston National Forest near Richards. Texas, April 3, 2023
Spores (in KOH) of fungus Hypoxylon rubiginosum from a tiny black dot on wood, collected a day before in Sam Houston National Forest near Richards. Texas, April 3, 2023
Growth of tiny puffs of anamorph (asexual stage) of crust fungus Hypoxylon rubiginosum(?) on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Yellow corticioid fungus Hypoxylon rubiginosum together with is brown anamorph (asexual stage) around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Thin yellow crust of corticioid fungus Hypoxylon rubiginosum around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Details of thin yellow crust of corticioid fungus Hypoxylon rubiginosum around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Close-up of thin yellow crust of corticioid fungus Hypoxylon rubiginosum around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Tiny soft granules of anamorph (asexual stage) of crust fungus Hypoxylon rubiginosum(?) on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Conidia and conidiophores of anamorph (asexual stage) of crust fungus Hypoxylon rubiginosum growing as soft tiny granules on elm wood under a microscope in KOH, collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
Conidiophores and tissue of anamorph (asexual stage) of crust fungus Hypoxylon rubiginosum growing as soft tiny granules on elm wood under a microscope in KOH, collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
Conidia and conidiophores of anamorph (asexual stage) of crust fungus Hypoxylon rubiginosum growing as brown fluffy granules on elm wood under a microscope in KOH, collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
Tiny soft granules of anamorph (asexual stage) of crust fungus Hypoxylon rubiginosum(?) together with some orange tooth-like corticioid fungus on a fallen tree branch in Lick Creek Park. College Station, Texas, April 19, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United StatesMushroom Observer and Facebook for learning names of local mushrooms.
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