Subclass Myxogastromycetidae see Subclass Myxogastria Fries, 1829 Order Trichiales T. Macbr. (1899) see Order Trichiida Macbride, 1922 Family Trichiaceae Chevall. (1826) see Family Trichiidae Chevallier, 1826 Genus Arcyria Wiggers, 1780