Observation 134443: Agrocybe Fayod

When: 2013-05-18

Collection location: Plymouth, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

Specimen available

Yellow, cracked caps found in wood chips during dry weather. I checked various growth stages of this species and could not find a partial veil or veil remnants on the stipe or cap margin. It lokes like the stipe is tearing longitudinaly, giving the appearance of a partial veil. I went back to that location today and most of the remaining fungi were brown,lightly zoned. applanate and slimy. One of my photos shows the various stages of growth. In the spore photos each occular line represents approximately 2.4mu for the small spores. For the larger spores each line is approx. 1mu. This collection can be placed with observation 128056.

Proposed Names

63% (2)
Used references: Mushroom expert.com
84% (1)
Recognized by sight: Based upon current understanding of A. praecox as a ringed type.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Phil Yeager (gunchky)
2013-05-27 11:08:31 PDT (-0700)

Kuo describes this cluster as having a thin whitish ring near the apex which often dissapears. That is why I mentioned that I wished I knew more about dissecting mushrooms to ascertain if the “ring” area was different structually than the main portion of the stipe. Guesswork on my part.

Right Phil…
By: Dave W (Dave W)
2013-05-24 20:52:48 PDT (-0700)

My bad. Should have read the notes more carefully. But why then are you so confident about “praecox group” when the evidence fails to suggest that your mushrooms have an annulate stage?

Perhaps there are no ringless robust spring Agrocybes, just ringed type(s) that often lose their ring. I think this is one of the interesting subplots to this Agrocbye discussion. But for now, it seems prudent to call ones that show no sign of a ring “Agrocybe.”

By: Phil Yeager (gunchky)
2013-05-24 17:57:48 PDT (-0700)

In the notes above my observation I mentioned exactly what you are refering to. If I were better at disecting fungi I would examine that portion of the stipe to ascertain if the hyphal material was different from that of a partial veil.

Phil, I think you have…
By: Dave W (Dave W)
2013-05-24 16:30:00 PDT (-0700)

the same problem here as with obs 128056. It’s difficult to tell whether or not these mushrooms ever had well-defined rings. The brown areas on the stipes may just be context that pulled away and darkened after cracking.

Created: 2013-05-24 16:11:41 PDT (-0700)
Last modified: 2013-05-24 20:55:08 PDT (-0700)
Viewed: 72 times, last viewed: 2017-11-13 18:57:44 PST (-0800)
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