 Entoloma murrayi , commonly known as the yellow unicorn Entoloma or the unicorn pinkgill , is a species of fungus in the Entolomataceae family . First described from New England ( USA ) in 1859 , the species is found in eastern North America , Central and South America , and southeast Asia , where it grows on the ground in wet coniferous and deciduous forests . The fungus produces yellow mushrooms that have a characteristic sharp umbo on the top of a conical cap . The mushroom is inedible and may be poisonous . Other similar species can be distinguished from E. murrayi by differences in color , morphology , or microscopic characteristics . 
