New American Oxford Dictionary
russula
rus su la |ˈrəs (y )ələ ˈrəsjələ | ▶noun a widespread woodland toadstool that typically has a brightly colored flattened cap and a white stem and gills. [Genus Russula, family Russulaceae, class Hymenomycetes: numerous species. See also sickener ( sense 2 ). ] ORIGIN modern Latin, from Latin russus ‘red ’ (because many, such as the sickener, have a red cap ).
Oxford Dictionary
russula
russula |ˈrʌsələ | ▶noun a widespread woodland toadstool that typically has a brightly coloured flattened cap and a white stem and gills. ●Genus Russula, family Russulaceae, class Hymenomycetes: numerous species. See also sickener ( sense 2 ). ORIGIN modern Latin, from Latin russus ‘red ’ (because many, such as the sickener, have a red cap ).