Machida, Tokyo
"Marasmius funalis" is known only from Kawasaki, Kanagawa and Machida, Tokyo, Japan. Mushrooms grow in groups on dead plant matter, and have been recorded on Japanese cedar ("Cryptomeria japonica") wood and leaf litter in woodland mostly made up of Chonowski's hornbeam ("Carpinus tschonoskii") and bamboo-leaf oak ("Quercus myrsinifolia"). The mushrooms can be encountered from May to July.