Synonyms: Arcyrella cornuvioides, Arcyrella decipiens, Arcyrella inermis, Arcyria adnata, Arcyria aurantiaca, Arcyria bonariensis, Arcyria cinnamomea, Arcyria clavata, Arcyria cornuvioides, Arcyria dictyonema, Arcyria incarnata, Arcyria inermis, Arcyria intricata, Arcyria macrospora, Arcyria nodulosa, Arcyria ornata, Arcyria raciborskii, Clathroides aurantiacum, Clathroides bonariense, Clathroides cinnamomea, Clathroides dictyonema, Clathroides ferrugineum, Clathroides inerme, Clathroides raciborskii, Heterotrichia gabriellae.
Arcyria ferruginea is a species of slime mold that belongs to the class Mycetozoa. It is characterized by its reddish-brown to ferruginous sporangia, which are typically 1-3 mm in height and have a stalked, goblet-shaped or cylindrical appearance. In East and Central Texas, A. ferruginea has been found growing on decaying logs, stumps, and other organic matter in wooded areas, particularly during the spring and fall months when moisture is abundant. The species is often associated with rich, fertile soils and can be found in a variety of habitats, including forests, woodlands, and along streams.
Bright red slime mold Arcyria ferruginea on a pine fallen across the trail on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020
Bright red slime mold Arcyria ferruginea on a pine log on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020
Close-up of bright red slime mold Arcyria ferruginea on a pine log on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020
Bright red slime mold Arcyria ferruginea on a side of a pine log on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020
Texture of slime mold Arcyria ferruginea on burnt oak in Bastrop State Park. Bastrop, Texas, March 24, 2020
Orange patch of slime mold Arcyria ferruginea on burnt oak in Bastrop State Park. Bastrop, Texas, March 24, 2020
Close-up of slime mold Arcyria ferruginea on burnt oak in Bastrop State Park. Bastrop, Texas, March 24, 2020
Slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Pine log with slime mold Arcyria ferruginea on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Slime mold Arcyria ferruginea on a pine log, partially under bark, on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Pattern of slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Close-up of slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Close-up (in scattered light) of slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Geometrical pattern of slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Slime mold Arcyria ferruginea growing over some corticioid fungus on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2021
Slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, February 6, 2022
Slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 11, 2023
Close-up of slime mold Arcyria ferruginea on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, January 11, 2023
Slime mold Arcyria ferruginea on a log on Richards Loop Trail in Sam Houston National Forest. Texas, February 4, 2023
Close-up of slime mold Arcyria ferruginea on a log on Richards Loop Trail in Sam Houston National Forest. Texas, February 4, 2023
Slime mold Arcyria ferruginea on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 23, 2023
Close-up of slime mold Arcyria ferruginea with crust fungus Coniophora on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 23, 2023
Slime mold Arcyria ferruginea on a pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 1, 2024
Close-up of slime mold Arcyria ferruginea together with Trichaptum on a pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 1, 2024
Tissues of slime mold Arcyria ferruginea under a microscope, collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 1, 2024The list documents observations of the slime mold Arcyria ferruginea in East and Central Texas from 2013 to 2024. The species was found on various substrates, including pine logs, burnt oak, and other decaying wood, in several locations within Sam Houston National Forest and Bastrop State Park. The observations were made during winter months (December to March) and feature detailed descriptions and close-up photos of the slime mold's appearance, texture, and growth patterns. Some observations also note the presence of other fungi, such as corticioid fungus and Trichaptum, growing alongside Arcyria ferruginea. The data provides a record of the species' distribution, habitat, and morphology in the region, with multiple sightings over several years suggesting a stable population. Microscopic examination of collected tissues was also conducted, further confirming the identity of the species.
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