Observation 82745: Amanita sect. Lepidella sensu Bas
When: 2011-11-17
No herbarium specimen

Notes: This just could be a late blooming and poorly developed Amanita from the muscaria group or it could be another representative of sect. Amanita. A single “petite-sized” specimen growing under P. rigida.

Cap: 5.5 cm in diameter; densely covered in warts and pruinose veil material

Gills: Free or adnexed; the blade edges covered with pruinose veil remnants

Stipe: ringless and highly pruinose 5.3 cm in length; diameter: 1.3 cm near the apex, 1 cm at the narrowest section in the middle, 2.1 cm at the wides section of the bulb

Spores: amyloid, 10 × 7 micron, smooth oval (as per J. N. Burghardt; updated on 11/20/11 at 12:12 a.m. EST)

The entire basidiocarp was covered in powder, but due to handling by me and other people, a lot of that material was rubbed off before the pictures were taken.

Images

183012
183013
183014
183015
183016
Unfortunately, due to the fragility of the mushroom, the stipe eventually broke off and was re-attached to the pileus with a pin (pin head seen in the middle)

Proposed Names

-61% (2)
Based on microscopic features: Spores are amyloid, cannot be sect. Amanita
-46% (2)
Based on chemical features: Spores are amyloid, cannot be sect. Amanita
16% (3)
Eye3 Eyes3
Recognized by sight: Pileus margin appendiculate
Based on microscopic features: Spores amyloid
14% (3)
Recognized by sight: Pileus margin not appendiculate
Based on microscopic features: Spores amyloid

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
“Yellowing Syndrome”
By: I. G. Safonov (IGSafonov)
2011-11-22 10:45:23 PST (-0800)

I read the pertinent discussion on the “yellowing syndrome”, but I don’t think this specimen has been afflicted with it. Visually, the material I collected looked perfectly “healthy” to me, apart from its small stature, — it did not smell or stain upon handling. Debbie peered enough into the pics to realize that the material on the pileus and the colors seen appear to be the natural attributes of this species, and I am of the same opinion. Rod, if you would like to work on this mushroom, either Nina Burghardt or I can arrange sending it to you.

the pale orange color…
By: Debbie Viess (amanitarita)
2011-11-22 09:56:36 PST (-0800)

seems more like UV remnants than the yellowing seen in some lepidellas.

Could the yellowing be a “disease”? [Edited]
By: R. E. Tulloss (ret)
2011-11-22 02:34:29 PST (-0800)

Species in sect. Lepidella are among those that get what I’ve called the “yellowing syndrome.”

There’s a discussion of this here:

http://www.amanitaceae.org?Amanita+subsolitaria

The yellowing syndrome has been behind several taxon names and provisional names applied to specimens that turned yellow on exposure or from handling or cutting.

In the case of the yellowing syndrome, the shape of the spores is sometimes altered/distorted.

R.

Not in subgenus Amanita
By: I. G. Safonov (IGSafonov)
2011-11-19 21:16:54 PST (-0800)

We were all wrong — see the spore data above.

Created: 2011-11-17 17:00:44 PST (-0800)
Last modified: 2014-11-06 12:45:40 PST (-0800)
Viewed: 144 times, last viewed: 2016-03-31 06:52:47 PDT (-0700)
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