Edible, wild fungi of South Australia post #9 Yellow Field Cap (Bulbitius titubans)

Hi everybody! Here's the ninth in this early season ID guide for South Australian edible mushrooms. This one is about that easy to find, easy to identify Yellow Field Cap.

Yellow Field Cap (Bulbitius titubans)

Phylum: Basidiomycota. Class: Agaricomycetes. Order: Agaricales. Family: Bolbitiaceae

Yellow Field Caps (Bulbitius titubans) are listed here for interest only. They are edible but are so tiny, watery and tasteless that they’re only really suitable as a famine food. It takes a good many to make a handful and when they are cooked, they shrink to almost nothing. They are, however easily found, easy to identify and usually occur in numbers in the cooler weather.

Easy to find yellow. See the patchy/granular stem.

That being said, I find the appearance of these little yellow mushrooms to be a joy. They are so bright when young but shrivel and fade to a dull, wrinkly grey when they age, often after mere hours. They remind me of the transience of things – you can see them bright and yellow at the start of a walk but see no trace of them when you return.

Yellow Fieldcaps grow in grass and hay and are commonly found on ovals and in parks near Gawler. They can be found all day, even in full Sun.

The stems can grow very long.

They shrivel and fade to a dull grey very quickly.

They turn brown as they age after maturity.

Identifying Yellow Field Caps – a summary:

If you’re on a grassed area and find something that you think could be a Yellow Field Cap , look for these details –

  • Young caps are yellow and moist/slimy, almost egg shaped and open up as they mature.
  • Old caps turn grey and shrivel, often within a few hours.
  • Striations are visible on the caps as they open up and before they start to shrivel
  • Gills are pale yellow when young and become a cinnamon colour as they age.
  • Stem is fragile and hollow, it is yellow tinted white and is slightly patchy/granular towards the top
  • Stem can grow very long
  • Spores are a rusty brown/cinnamon colour






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