Observation 196133: Agrocybe Fayod
When: 2014-12-31
Who: zaca
No herbarium specimen

Images

499255
499256
499777
Microscopy: Spores (x1000);
499778
Microscopy: Basidia;
499779
Microscopy: Cheilocystidia-1;
499781
Microscopy: Cheilocystidia-2;
499783
Microscopy: Pileipellis;
499784
Microscopy: Basidis and Cheilocystidia (x1000).

Proposed Names

8% (2)
Eye3
Recognized by sight
45% (2)
Recognized by sight
28% (1)
Recognized by sight
46% (2)
Recognized by sight
52% (3)
Eyes3
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Maybe it belongs to a different genus …
By: zaca
2015-01-15 15:04:03 CST (-0600)

from those considered: Agrocybe and Cyclocybe.
The combination of the features for:
- Spores dimensions;
- Form of cheilocystidia;
- (Almost ?) lacking of pleurocystidia;
- No cellular pileipellis;
seem to rule out these genera; At least I was not able to find anything similar. What could it be? (I don’t know).

Did it have a cellular pileipellis?
By: Christian (Christian Schwarz)
2015-01-15 14:13:30 CST (-0600)

Check other Agrocybe? I’m out of ideas.

Doesn’t seem to match C. erebia.
By: zaca
2015-01-15 14:02:03 CST (-0600)

Nor the form neither the dimension of the spores match those of C. erebia. These are described in FAN6 as elliptical with dimensions of (9.0-)10-15 x (5-) 5.5-7.0 (-7.5) µm. For this specimen we have much smaller spores, broad ellipsoid with dimensions:
(7.9) 8.1 – 9.6 (9.9) x (5.7) 5.9 – 6.7 (6.8) µm
Q = (1.3) 1.31 – 1.5 (1.7) ; N = 25
Me = 9 × 6.3 µm ; Qe = 1.4.
Another divergence relates to the form of cheilocystidia, which according to FAN6, for C. erebia are a mixture of clavate elements and lageniform to narrowly utriform, while for this specimens I observed mostly lageniform cheilocystidia. Maybe there are some pleurocystidia near to the gill edge, but none was observed far from there.
Continuing with the discrepancies relatively to C. erebia, I must refer that I found no trace of clavate elements on the pileipellis.

Formerly
By: Christian (Christian Schwarz)
2015-01-12 21:19:44 CST (-0600)

Agrocybe erebia, this is a Vizzini and Matheny nomenclatural change.
I don’t know much about it beyond that (as per usual for Vizzini names).

Christian…
By: Richard and Danielle Kneal (bloodworm)
2015-01-12 21:17:15 CST (-0600)

do you have information on Cyclocybe.

i can’t seem to find much.

Created: 2015-01-12 18:04:52 CST (-0600)
Last modified: 2015-01-15 23:16:54 CST (-0600)
Viewed: 107 times, last viewed: 2016-11-25 16:47:31 CST (-0600)
Show Log