Archaeorhizomyces finlayi

Archaeorhizomyces finlayi is a species of fungi in the class Archaeorhizomycetes and the type species. When the class was described in 2011, a single order, Archaeorhizomycetales, family, Archaeorhizomycetaceae, genus, "Archaeorhizomyces" and species, "Archaeorhizomyces finlayi", were described, though other species are known to exist. "A. finlayi" is named in honour of Roger D. Finlay.
"Archaeorhizomyces finlayi" is known from Scandinavia and North America. The species grows around the roots of coniferous trees, though has been grown in agar culture. Thin hyphae make up the mycelia, measuring from 1 to 2 μm in diameter. Individual hyphal cells are separated by simple septa. Chlamydospores are produced by older organisms, and measure 3 to 6 μm in diameter.