About Mycetinis opacus (Berk. & M.A.Curtis) A.W.Wilson & Desjardin
Mycetinis opacus is an agaric fungus species. It was first described in 1849 by Miles Joseph Berkeley and Moses Ashley Curtis, under the original name Marasmius opacus. Andrew Wilson and Dennis Desjardin moved this species to the Mycetinis genus in 2005. The cap of this fungus grows to a maximum diameter of around 2 centimetres, or 3⁄4 of an inch. Its stem can reach up to 5 centimetres, or 2 inches, in length, and it produces a white spore print. This species has noticeable pale mycelial cords. Unlike some other species in the Mycetinis genus, Mycetinis opacus does not have a garlic odor. It can be found in eastern North America from May through September, and rarely occurs in Japan. It grows most often on dead Rhododendron material, and also grows on debris from oak, pine, and eastern hemlock.
