Synonyms: Helicocoryne viridis, Helicoma viride, Helicosporium viride.
Drepanospora viridis is a species of fungus in the phylum Ascomycota, characterized by its bright green to yellowish-green appearance. In East and Central Texas, it has been found growing on decaying wood, soil, and plant debris, particularly in moist, shaded areas. The fungus produces small, disc-shaped ascocarps with a hairy or velvety texture, containing eight-spored asci. It is typically seen during the spring and fall months when humidity is high.
Green fluffy corticioid fungus Drepanospora viridis (Helicoma viride)(?) under a fallen pine on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, December 24, 2019
Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Close up of green fluffy corticioid fungus Drepanospora viridis (Helicoma viride)(?) under a fallen pine on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, December 24, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Dusty yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) under a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Dusty yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Close-up of dusty yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Green corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a thick wet pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Green and yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a thick wet pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Thin green and yellow covering (turns dark-olive after drying) of corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a thick wet pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Close-up of corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a thick wet pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Conidiophores (brown) and helically coiled conidia at low magnification of corticioid fungus Drepanospora viridis (Helicoma viride)(?) from underside of a fallen pine, collected on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023
Conidiophores (brown) at low magnification of corticioid fungus Drepanospora viridis (Helicoma viride)(?) from underside of a fallen pine, collected on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023
Tissues and some spores of corticioid fungus Drepanospora viridis (Helicoma viride)(?) from underside of a fallen pine, collected on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023
Helically coiled conidia of corticioid fungus Drepanospora viridis (Helicoma viride)(?) from underside of a fallen pine, collected on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023
Chains of some black spores of corticioid fungus Drepanospora viridis (Helicoma viride)(?) from underside of a fallen pine, collected on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023
Helically coiled conidia and conidiophores (brown) of corticioid fungus Drepanospora viridis (Helicoma viride)(?) from underside of a fallen pine, collected on Richards Loop Trail in Sam Houston National Forest. Texas, December 17, 2023
Spores from a piece of wood with corticioid fungus Drepanospora viridis (Helicoma viride)(?) from a fallen pine, collected a day before on Richards Loop Trail in Sam Houston National Forest. Texas, December 18, 2023Observations of the fungus Drepanospora viridis in East and Central Texas reveal its presence under fallen pines and on pine logs in Sam Houston National Forest. The fungus appears as a green fluffy corticioid growth, sometimes with a dusty yellow coloration. It has been found on the underside of pine logs, particularly those that are thick and wet. Close-up observations show helically coiled conidia and brown conidiophores. The fungus can turn dark-olive after drying. Spores have been observed in chains, including some black spores. The fungus has been consistently found on Richards Loop Trail, with variations in color and texture noted across different observations between 2019 and 2023.
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