Dermocybe canaria, "Canary Webcap" is a rare, brightly coloured species found in SE Australia and NZ, mycorrhizal with eucalypts.
Cap and stem are bright yellow, cap to 80 mm, convex, umbonate, Stem often has a bulbous base, and veil remnants in a fugitive, fibrillose ring. Spore print yellowish rusty brown. Original public domain image from Flickr