Lichenomphalia chromacea, "Yellow Navel" (formerly known as Omphalina chromacea) grows always associated with an algal mat, with which it forms a lichenous symbiotic relationship; the fungus produces spores, whilst the algae produces photosynthetic products. Especially found on disturbed ground, and native to Australia. Caps to 25 mm, bright chrome yellow, funnel-shaped, with a down-curved, scalloped margin. Gills quite decurrent, distant, may be forked or joined by little sideways connections (anastomoses); spore print white. Stem slender, yellow, no ring. NB: might be two species in this photo. Devilbend Reservoir, 2007.