Cap: less than 23 mm across, with a convex shape and an incurved margin when young, expanding to broadly convex. Surface is smooth, often cracking with irregular fissures.
Gills: gray to black
Stem: 5 to 10 cm tall, 4 mm thick, and slightly swollen at the base
Spores: blackish brown, shaped like lemons, smooth, measuring 11 x 8 micrometres
Additonal notes: The entire mushroom quickly bruises blue where it is handled. It can be differentiated from Panaeolus cyanescens by microscopic characteristics.
Habitat and distribution: Panaeolus cambodginiensis is mushroom that grows on dung of water buffalo. It was first described from Cambodia and is widespread throughout the Asian subtropics and Hawaii.
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