Observation 21105: Cortinarius magnivelatus Dearn. ex Fogel

When: 2009-05-16

Collection location: Pipi Valley, El Dorado Co., California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

Collected by Nate Segraves at BAMS/FFSC foray.


Proposed Names

57% (1)
Recognized by sight: cap whitish, brown in center, depressed; persistant membranous/sl. fibrillose partial veil (torn by humans); distinctly bulbous base; pleasant smell; context ochre/greenish (no KOH). similar to magnivelatus, but I don’t believe that it is.
86% (1)
Based on microscopic features: spores a good match.

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= Observer’s choice
= Current consensus


Add Comment
then again, variability happens!
By: Debbie Viess (amanitarita)
2009-05-21 05:14:57 NZST (+1200)

partial membrane thinned to that more typical of magnivelatus. context KOH negative. spores also a good match.

it’s a fooled me Cortinarius magnivelatus!

depressed cap and odd green staining make me think it could be something different…
By: Debbie Viess (amanitarita)
2009-05-20 10:45:28 NZST (+1200)

I’ll save it for you.

Nice — keep collecting a photographing those Corts.
By: Dimitar Bojantchev (dimitar)
2009-05-20 06:28:29 NZST (+1200)

Hi Debbie, thank for being an informed collector. Nice collection+image! As
Darvin mentioned C. magnivelatus (by far the most common in our
typical area and season!!) and C. saxamontanus Fogel are common in the
Spring-Summer Sierra Nevada. Ammirati was telling me that he is
reviewing these and the perception might change a bit. Anyway, there
are a few other interesting hypogeous Corts from Western North
America’s Montane regions that Smith & Thiers described —
C. bigelowii, C. wiebeae, C. velatus, etc. These are worth further
investigation to compare against as they also fruit early summer. I’d
be interested to review the material.

Still, what makes you uncomfortable to apply the magnivelatus concept
here? Compare:


another choice
By: Darvin DeShazer (darv)
2009-05-18 15:36:17 NZST (+1200)

Cortinarius saxamontanus is close to this with a bulbous base and a light yellow cap with a brownish disc. The context of the stipe turns pale violet when young.

Created: 2009-05-18 14:56:46 NZST (+1200)
Last modified: 2009-05-18 14:56:46 NZST (+1200)
Viewed: 134 times, last viewed: 2019-01-30 11:22:54 NZDT (+1300)
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