Observation 112881: Pleurocybella porrigens (Pers.) Singer
When: 2012-10-06
Herbarium specimen reported

Notes: Found it in two places, growing on conifer logs. In little ones, the cap radius is up to 1 cm, in the largest (second photo), it’s over 3 cm.

Spore print was very weak, probably white. Spores measured 5-7 × 5-5.5 microns.

Proposed Names

5% (6)
Recognized by sight
-32% (6)
Recognized by sight
Based on microscopic features: spore size and shape.
-12% (3)
Recognized by sight
45% (8)
Eye3 Eyes3
Recognized by sight: Old discolored fruit bodies, white spored, on conifer wood
-47% (4)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Sava Krstic (sava)
2012-10-12 03:10:15 COT (-0500)

Christine and Irene, I also believe now it’s (shriveling) P. porrigens. The weather has been dry indeed. And I see Michael Beug photo (http://www.svims.ca/...) showing young “wings” dorsally attached.

This ID was fun. Thanks to all!

I think
By: Irene Andersson (irenea)
2012-10-12 02:20:57 COT (-0500)

it’s a good match with Pleurocybella porrigens, and that both the shrinked shape and tough fruitbodies can be blamed on drought.
Don’t know about the large basidia though, they are a mystery.

P. porrigens?
By: Sava Krstic (sava)
2012-10-12 01:34:42 COT (-0500)

Microscopically, P. porrigens seems close; its spores match perfectly, basidia not quite so (up to 36 vs. 50 microns), cheilocystidia often said to be absent, but in Funga Nordica described as “cylindrical to subclavate or lageniform”, clamps in the cap cuticle.

We see a lot of P. porrigens in PNW and we actually found some in this area (Mosquito Lake) a week before. However, I’ve never seen “angel wings” growing like this (dorsally attached). Then, as Debbie suspected, these mushrooms are tougher than any Pleurocybella (or Crepidotus) I’ve seen.

it reminds me a bit of a tropical rainforest sp.
By: Debbie Viess (amanitarita)
2012-10-11 22:00:36 COT (-0500)

did it feel as tough as it looks?

By: Richard and Danielle Kneal (bloodworm)
2012-10-11 21:13:51 COT (-0500)


this is pre·pos·ter·ous…
By: Richard and Danielle Kneal (bloodworm)
2012-10-11 21:01:18 COT (-0500)
Not C. vulgaris?
By: Sava Krstic (sava)
2012-10-11 01:31:20 COT (-0500)

I doubt that the spores are brown. I crush-mounted a piece of gill in water and didn’t see what would normally be brown spores. The original spore print on glass slide was so faint that I couldn’t say anything about the color, so I mounted it in Melzer’s. The picture is here; I’m not sure if we can conclude from it that the spores are not brown.

The gills didn’t show signs of turning brown as in Crepidotus I’ve seen. There’s discoloration on them, starting at the edges, but I guess that’s more likely due to drying. The description (http://www.mykoweb.com/...) says that gills of C. vulgaris are broad, but on the large specimen here they are quite narrow, distant and blunt.

Some microscopy added. The shape of cystidia does not seem to match the description well (“clavate, ventricose, at times constricted, or flask-shaped”), but I was not able to see their lower part. The basidium pictured is twice as long as in description (50 vs. 22-23 microns). The hyphae of the cap cuticle are 2.5-4 microns broad in the description; what I saw was uniformly about 5 microns broad.

I find
By: Christian (Christian Schwarz)
2012-10-09 11:07:24 COT (-0500)

something that looks a lot like the first photo on mossy trailsides in Santa Cruz, still not sure what to call it.

Created: 2012-10-09 03:17:27 COT (-0500)
Last modified: 2012-10-12 16:48:11 COT (-0500)
Viewed: 436 times, last viewed: 2016-10-24 18:07:58 COT (-0500)
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