Stuart Rae

Bright yellow fungus

A cluster of the Yellow Houseplant Mushroom Leucocoprinus birnbaumii

There has been a long warm spell at the end of this summer in Canberra, with a several periods of heavy rain. All of which added up to warm humid conditions - perfect for mushrooms, such as this bright yellow fruiting species that popped up in a plant pot on the verandah.

This is a tropical/warm temperate species with a worldwide range, so the recent warm humidity must have encouraged this one to fruit. The weather in Canberra is not usually so warm and wet at the end of summer and early autumn. The fungus grows in moist, rich organic soils, so the conditions in the pot where a small orange tree grows were probably tipped in its favour as the humidity increased. This is the first time I have seen one in the garden. Although the mycelia can probably live in the soil it takes a period of warm humidity to induce them to fruit.

I saw the fungus sprouting one day and the next they had burst open.

DO NOT EAT