Yellow staining mushrooms looks rather like the edible field and horse mushrooms, but it is a seriously bad idea to eat them.
The first warning sign is the strong yellow colour when the mushroom is cut, broken or scraped: the colour eventually turns to a dull brown. The colour is showing on these mushrooms, especially in patches on the rims of the caps of the second and third.
This odd-looking fungus is a Ramaria or coral fungus. There are several species which are approximately this yellowish colour.
A second fruiting body, very near the first.
Another picture of the specimen in the top picture. This shot was taken under overcast conditions, and seems to show that the tips (of the basiocarps) are a more vivid yellow colour.
https://www.flickr.com/photos/davea2007/7465405192
A common but not very conspicuous weed, groundsel is a plant with wind-dispersed seeds. It’s another plant where this stage is claimed to resemble the beard of an old man.
Horse mushrooms seem to like the conditions in East Park. These were growing in a patch near the cycle track
The wet weather in June was enjoyed by snails and slugs. This one was conveniently at eye level.
https://www.flickr.com/photos/davea2007/7459142840
The stem supporting these seeds was as tall as me.