Observation 122986: Cortinarius ponderosus A.H. Sm.
When: 2013-01-19
No herbarium specimen
0 Sequences

Notes:
Habitat: Sierra Nevada foothills. Mixed pine/fir/madrone 3100ft elevation. January 2013. Two mushrooms found, 10ft apart.

Cap: Large, brown, 8inches diameter, firm, dense, thin brown scales, dry.

Stalk: Firm, bulbous base. 2-3inches wide.

Gills:attached, brown/tan

Flesh:white

Scent:mild/sweet

Taste:mild

Spore print:brown, 5-6×8-12microns

This is one of the best looking agarics I have found. This older mushroom was still pushing through the duff and it’s stalk went deep into the soil. The thick cap and stalk make this a temping looking shroom to put in the pot.

I’ve attached some microscope images for the bio-nerds out there. (And yes, I did use my cellphone held up to the eyepiece.)

Is this Cortinarius ponderosus(and can I eat it)?

At 400x each small division=2.5microns and at 1000x, 1micron.

Images

303052
The smaller of the two mushrooms, 6inches diameter
303035
Spores 5-6×8-12microns. 1000x
303036
303037
Notice thin brown Scales
303038
303039
Gill Hyphae cross-section, Parallel. 400x
303040
Gill Hyphae, 1000×. Notice the 4-spored holobasidium(I think) below the center of the blurred rectical.
303041
Tissue taken from the cap. Is the bump, under the #6, a medallion clamp? 1000x
303042
What are the brown strands within the hyphae? Oleiferous Hyphae?

Proposed Names

25% (1)
Eye3 Eyes3
Used references: MD, David Arora.
How to Identify Mushrooms to GenusIII:Microscopic Features
Based on microscopic features: Spores

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
No one has commented yet.

Created: 2013-01-19 20:24:46 CST (-0500)
Last modified: 2013-01-19 21:42:00 CST (-0500)
Viewed: 58 times, last viewed: 2017-11-28 17:56:59 CST (-0500)
Show Log