Posts tagged Inedible mushrooms

A look-alike Psathyrella

This small cluster of mushrooms appeared recently in a garden bed amoungst some horse manure.

These mushrooms have a white cap with a brown colouration in the middle and when we flip them over, we can see that the gill colour is in the right range.

However, if we try to separate the cap from the stem, we find that we can’t, and the stem is furthermore completely hollow and thinner than what we might expect from an Agaricus.  The mushroom pictured is Psathyrella candolleana.  There is another species more commonly seen in forests called P. aspersopora.  Both are of unknown or doubtfull edibility.

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A look-alike Hebeloma

During another walk this evening I encountered another mushroom that had a similar appearance to an edible field mushroom.   I picked it and brought it back to the house to document why it is not an edible field mushroom.  Here is a picture of the cap.

The cap is not outside of the colour range that one might expect for an edible field mushroom, but notice that it is shiny?  In fact it is quite slimy to the touch.  This alone is enough to declare it to not be an edible Agaricus.  However, let us continue…

When we flip the mushroom over, we can see that the gills are in the right kind of colour range and that the stem has the right sort of thickness in relation to the cap.  In fact, the gills even darken from pinkish to brown over time.   However, the thing that is glaringly absent is an annulus or ring on the stem.  Not a hint of one!  We know for sure now that this is not an edible Agaricus, but lets go further…

If we attempt to snap the stem away from the cap, the result is unsucessful.  The whole cap tears apart rather than breaking at the junction of the stem and the cap.  There is no change in the tissue type between the stem and the cap.  This thing has now failed three tests.  Quite a pretty mushroom never the less 🙂

If you are wondering about the tabletop, it is Australian red cedar, Toona ciliata.  The mushrroom is Hebeloma westraliense, edibility unknown (Bougher and Syme).  Hebelomas are very useful for promoting the growth of Eucalypts and are cultivated for that purpose worldwide.

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