| cortinarius | (n) the largest genus in the Agaricales; agarics having rusty spores and prominent cortinae (cobwebby partial veils), Syn. genus Cortinarius |
| cortinarius armillatus | (n) a fungus with large tawny caps and pale cinnamon gills and a red band of veil around the stalk; usually found near birch trees |
| cortinarius atkinsonianus | (n) an edible fungus with a slimy viscid cap that is initially yellow but turns olive and then tawny; flesh is lavender |
| cortinarius corrugatus | (n) a fungus with a viscid wrinkled tawny cap; the stalk has a basal bulb that diminishes as the stalk elongates; the gills are dark violet at first but soon turn brown |
| cortinarius gentilis | (n) a poisonous fungus with a bright yellow brown cap and a long cinnamon colored stalk |
| cortinarius mutabilis | (n) a fungus with a reddish purple cap having a smooth slimy surface; close violet gills; all parts stain dark purple when bruised, Syn. purple-staining Cortinarius |
| cortinarius semisanguineus | (n) a fungus with a dry brown cap and rusty red gills and a yellowish stalk |
| cortinarius subfoetidus | (n) a fungus with a sticky lavender cap and stalk that whitish above and covered with a silky lavender sheath |
| cortinarius violaceus | (n) a fungus that is violet overall with a squamulose cap |