Observation 220301: Porphyrellus E.-J. Gilbert
When: 2015-10-23

Notes: This particular Fungi had several unusual aspects when dissected. The stipe when separated from the cap, and originally displaying a White texture, turned Orange almost immediately, and then later to a dirty grey colour. The same effect occurred when the stipe was split. The Fungi also had a slight Green tint where the stipe met the pores under the cap. The smallest fungi had two small fungi growing from the base area of the stipe. The Larger fungi (and not attached to the smaller fungi), was free of any other fungal bodies. The fungi was well rooted in the forest soil. The area was an earthy bank in a Eucalyptus rainforest area. These two (main) specimens were the only finds in the local area. There was no distinctive aroma. The spore print colour appears to be Grey. The cap was not sticky.
. See attached notes for jpg images 77295 & 77296.) The more mature
Fungi displayed the Green tint of colour at the top of the stipe. The last image jpg 77298 shows the Final colour change to Grey. The pores areas on both fungi were easily bruised but turned Grey . (No Orange was noticed here.)


Jpg’s 22795 and 22796 show changing colour (to Orange) when stipe separated from Cap.

Proposed Names

28% (1)
Recognized by sight
94% (3)
Eye3 Eyes3
Recognized by sight: Near P. brunneus McNabb. Some molecule studies infer that the Oz material might not fit the type concept of the genus as represented by P. porphyrosporus.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment

Thanks Debbie, you’re too kind. March is getting closer. When you get your confirmed arrival and depart times, timetable (my area), let me know please. (22nd March, is what I have at the moment. ) Looking forward to meeting you and showing you some of my little patch of Oz.

lookit you, Ian, finding fungi in the dry! :)
By: Debbie Viess (amanitarita)
2015-10-24 12:07:19 CDT (-0400)

can’t wait to hunt with you in March, Mate!

Keep up the good work. Really lovely documentation, like Roy said.

Would that all posters here were so conscientious and thorough.


Roy, Thanks again for your valued comments, Makes it all worth while. This was an intriguing record. I did have half an idea it may be a Tylopilus.{Porphyrellus}.

Oxidation reactions
By: Roy Halling (royh)
2015-10-23 18:37:57 CDT (-0400)

Thanks Ian for this excellent Obs and with the many images illustrating the complicated oxidation reactions.

You reminded me of how often one needs to make multiple observations in the bush, of the same taxon, to get the true perspective on the beast. One time the material is too young, the next too old and desiccated. Some days, you hit the jackpot. There is no substitute for practice and patience.

I have told folks that a simple longitudinal cut on some Boletes, properly done, when complete, will often not show true flesh/hymenophore colors; they happen too quickly. In this Obs, you have one which stains blue and is quickly masqueraded by the reddish/orangish. Eventually that oxidation will become black. The image, 2nd & 3rd from the bottom (the triangular bit near the stipe), illustrates the progression the best.

Depending on the age of the specimen, some stages of the oxidation might not appear.

Created: 2015-10-23 04:23:57 CDT (-0400)
Last modified: 2015-10-24 00:34:23 CDT (-0400)
Viewed: 75 times, last viewed: 2017-02-19 05:27:17 CST (-0500)
Show Log