Synonyms: Arcyrella incarnata, Arcyrella irregularis, Arcyria adnata, Arcyria brunnea, Arcyria flexuosa, Arcyria lilacina, Clathroides irregulare, Stemonitis incarnata, Trichia flexuosa.
Arcyria incarnata is a species of slime mold that belongs to the phylum Mycetozoa. It is characterized by its bright red to pinkish-orange color and slender, cylindrical sporangia that are typically 1-3 mm tall. In East and Central Texas, Arcyria incarnata has been found growing on decaying logs, stumps, and other organic matter in moist, shaded areas, particularly during the spring and fall months. It is often associated with rich soils and abundant vegetation, and can be found in a variety of habitats, including forests, woodlands, and along streams. The species is considered common in the region, but its fruiting bodies are typically short-lived and may be easily overlooked.
Carnival candy slime mold (Arcyria incarnata) on rotting oak in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020
Lone Star Hiking Trail, Coldspring, TX 77331, USA
Carnival candy slime mold (Arcyria incarnata) on an oak log in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Slime mold Arcyria incarnata with a white crust fungus on an oak log on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, December 12, 2021Lone Star Hiking Trail, Montgomery County, Texas, United States
Carnival candy slime mold (Arcyria incarnata) on a pine log on Forest Service Rd 231 near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 22, 2022Forest Service Rd 231, Montgomery County, Texas, United States
Spores (in KOH) of carnival candy slime mold (Arcyria incarnata) from a pine log, collected in Sam Houston National Forest north from Montgomery. Texas, October 22, 2022
Spores (in lugol) of carnival candy slime mold (Arcyria incarnata) from a pine log, collected in Sam Houston National Forest north from Montgomery. Texas, October 22, 2022Observations of Arcyria incarnata in East and Central Texas reveal the species' presence on various types of decaying wood. The slime mold was found on rotting oak in Big Creek Scenic Area of Sam Houston National Forest, as well as on oak logs in the same area. Additionally, it was observed on an oak log with a white crust fungus in the Caney Creek section of Lone Star Hiking Trail. The species was also spotted on a pine log near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness. Spore samples were collected from a pine log and examined in KOH and lugol, providing further insight into the species' characteristics. These observations suggest that Arcyria incarnata is able to thrive on different types of decaying wood in various locations within East and Central Texas. The species appears to be widespread in Sam Houston National Forest.
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