Mycena clariviolacea

Mycena clariviolacea is a mushroom in the family Mycenaceae. First reported as a new species in 2007, it is known only from Kanagawa, Japan, where it fruits on dead fallen twigs in forests dominated by oak and chinquapin trees. Distinctive features of this species are found in its medium-sized, dark violet fruit bodies, with caps up to 25 mm (0.98 in) in diameter and slender stems that are about 30 to 40 mm (1.2 to 1.6 in) long. Microscopic characteristics include the amyloid spores (staining when treated with Melzer's reagent), the club-shaped cheilocystidia (cystidia on the gill edge) that are covered with one or more, knob-like, apical protuberances, the absence of pleurocystidia (cystidia on the gill face), and the cylindrical, diverticulate caulocystidia (cystidia on the stem). ...read more on Wikipedia.