Observation 97884: Gymnopus subsect. Alkalivirentes
When: 2012-06-20
(19.3285° -98.7199° 3200m)
No herbarium specimen

Notes: Under pine.

White spore print.

In KOH, spores are hyaline with tiny dark green dots.

Lamellar trama hyphae lacking pigmented encrustations.

Images

229628
IMG_6019.JPG
229629
IMG_6022.JPG
229630
IMG_6024.JPG
229631
IMG_6111.JPG
Pleurocystidia 400x
229632
IMG_6112.JPG
Pleurocystidia 400x
229633
IMG_6113.JPG
Pleurocystidia 400x
229634
IMG_6114.JPG
229635
IMG_6115.JPG
Cheilocystidia 400x
229636
IMG_6118.JPG
Pileipellis 1000x
229702
IMG_6168.JPG
Spores 400x
229703
IMG_6169.JPG
Spores 400x
229960
IMG_6176.JPG
With KOH
229961
IMG_6178.JPG
Spore print
229963
IMG_6184.JPG
Spores in KOH 400x
229964
IMG_6188.JPG
Spores 1000x
229965
IMG_6190.JPG
Lamellar trama 160x
229966
IMG_6191.JPG
Lamellar trama 160x
229969
IMG_6193.JPG
Lamellar trama 400x
230001
IMG_6196.JPG
Pileipellis and pileus trama cross section 160x
230002
IMG_6197.JPG
Pileipellis and pileus trama cross section 160x
230003
IMG_6199.JPG
Lamellar trama 160x

Proposed Names

-41% (2)
Recognized by sight: Any more images of spores?
-5% (2)
Recognized by sight
29% (1)
Recognized by sight: Does not key out well to any species in the reference below
Based on microscopic features: Lamellar trama hyphae lacking pigmented encrustations
29% (1)
Recognized by sight: Cap texture does not match – this species is smooth even at the margin.
Based on microscopic features: Microscopic features do not match – this species has cystidia and lacks pigmented encrustations in the hyphae of the lamellar trama.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Fair
By: vjp
2012-06-25 09:43:57 PDT (-0700)

enough. I am wrong.

Halling has G. subnudus as pleurocystidia absent and doesn’t list microscopic features for the other two. The other resources i looked at all had pleurocystidia absent.

Hopefully Halling will see this observation.

Appreciate it

Who made that rule?
By: Alan Rockefeller (Alan Rockefeller)
2012-06-25 00:28:27 PDT (-0700)

Gymnopus pseudolodgeae has pleurocystidia according to New species and mating system reports in Gymnopus (Agaricales) from Costa Rica page 121. According to that paper page 122, G. peronatus, G. subnudus, and G. omphalodes also have pleurocystidia. According to A Monograph of Marasmius, Collybia and related genera in Europe page 22, pleurocystidia is absent or in a few species rare and inconspicuous in Gymnopus. Rare and inconspicuous pleurocystidia is a good way to describe this collection.

If it has
By: vjp
2012-06-23 13:45:59 PDT (-0700)

pleurocystidia then it’s not Gymnopus

Looks like
By: jimmiev
2012-06-22 08:59:35 PDT (-0700)

Gymnopus alkalivrens I find but I’m fairly ignorant to other Gymnopus that could closely related

KOH bright green
By: Alan Rockefeller (Alan Rockefeller)
2012-06-22 08:55:36 PDT (-0700)

KOH on the cap turned bright green instantly. I have never seen a green KOH reaction this intense. In the picture, one drop has been on the cap for a couple seconds, the others for about a minute. I also added pictures of the spore print. There are 2 prints because I moved the cap for microscopy the other day. The cap is hygrophanous; after printing for 2 days it faded to a light rose color. The cystidia is not obvious – It is rather deeply embedded in the gill, and for the first couple minutes I looked at it I thought it had no cystidia.

Gymnopus section Levidepes subsection Alkalivirentes
By: jimmiev
2012-06-22 08:54:53 PDT (-0700)
Every
By: vjp
2012-06-22 08:51:08 PDT (-0700)

Gymnopus species i have looked at lack Pleurocystidia – is this true for all Gymnopus?

Can you check reactions
By: jimmiev
2012-06-22 07:15:01 PDT (-0700)

with KOH?

are you in Mexico?
By: Britney Ramsey (Riverdweller)
2012-06-20 21:35:59 PDT (-0700)

;)

Created: 2012-06-20 21:34:37 PDT (-0700)
Last modified: 2012-06-28 23:07:06 PDT (-0700)
Viewed: 343 times, last viewed: 2016-10-25 22:21:38 PDT (-0700)
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