Description: The cap is less than 20 mm across, with a convex shape and an incurved margin when young. It is smooth and grey, often with a brown center and margin. The gills are adnexed and grey, with blackish spots. The stem is 5-12 cm tall, 2.5 mm thick, hollow, and slightly swollen at the base. The spores are dark violet black, ellipsoid, measuring 11 x 8 micrometres. The entire mushroom bruises blue where it is handled.
It can be differentiated from Copelandia cyanescens by microscopic characteristics.
Habitat and distribution: Copelandia tropicalis is mushroom that grows on dung. It has been found in Hawaii, Cambodia, Mexico, Tanzania, the Philippines, the Bononi Islands, and Japan and the Cook Islands
Image source: http://www.thehawkseye.com/pantrop/