Observation 178229: Amanita scalaris Tulloss nom. prov.
When: 2014-09-12
(39.8138° -74.5525° )
Herbarium specimen reported

Notes: > A family of three basidiomes growing on the side of the Red Trail near Bertha’s canal in the typical pine-oak barrens. The duo in the first pic were growing next to each other; the third specimen was found two feet away.
> All had bulbs shallowly buried in soil under needle duff.
> The largest fruiting body (the only one collected and preserved) dropped spores
> Cap = 6.3 cm in diameter; overall height = 7.5 cm; bulb = 2 cm at widest point; stipe = 1.5 cm at widest point (near the apex)
> The spore shape as seen at x400 and the presence of “terrace-like or disc-like rings at bottom of stipe or upper part of bulb” strongly suggest A. scalaris

Microscopy:
Spores are amyloid in Melzer’s;
[21/1/1]: L x W = 12.5-16.3 (-17.7) x (4.2-) 4.4-5.6 μm;
L x W = 14.6 × 4.7 μm;
Q = (2.50-) 2.70-3.50 (-3.68), cylindrical to bacilliform, with 2/3 of the measured spores having Q value of 3.0 and above; Q = 3.09

Images

455681
Basidiomes #1 & 2
455683
455684
455685
Basidiome #3
455686
Basidiome #3
455687
Cross-section of Basidiome #1
455688
The spore print viewed at x400; no mounting agents

Proposed Names

61% (2)
Eye3 Eyes3
Used references: 1) www.amanitaceae.org/?US+-+NJ+and+PA#sp4
2) www.amanitaceae.org/?Amanita%20scalaris
Based on microscopic features: spores with very high Q values

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Thank you for posting the spore data, Igor.
By: R. E. Tulloss (ret)
2015-02-07 13:37:43 CET (+0100)

That data and the rings around the stem base fit the concept I have of this taxon. I hope that we can get DNA as well.

Very best,

Rod

Spore measurements posted
By: I. G. Safonov (IGSafonov)
2015-02-07 07:32:13 CET (+0100)
Thanks Igor,
By: groundhog
2014-10-14 18:25:12 CEST (+0200)

This material has been received and accessioned to Rod’s herbarium. We have scheduled it for DNA sequencing.
-Naomi

Hello, Rod
By: I. G. Safonov (IGSafonov)
2014-09-14 20:47:57 CEST (+0200)

Thank you for your comment.

Yes, of course, this material is yours.

I have also preserved material from the following observations — please let me know if you are interested in having any of these as well:

obs 169331
obs 169570
obs 174500
obs 175243
obs 175244
obs 175355
obs 175356
obs 175574

Hello, Igor.
By: R. E. Tulloss (ret)
2014-09-14 17:23:47 CEST (+0200)

From my point of view this is a very good find.

The original site at which I collected “scalaris” is in Jamesburg Municipal Park near Helmetta Pond. Much of that site has been destroyed by illegal off-road vehicle traffic…including the place from which I first obtained collections of this species.

I do think that your material is extremely similar to the collections I made in Jamesburg.

If any or your material is available for study, I would like to examine it.

Very best,

Rod

Created: 2014-09-14 07:44:46 CEST (+0200)
Last modified: 2015-02-07 07:31:46 CET (+0100)
Viewed: 59 times, last viewed: 2016-10-28 14:33:33 CEST (+0200)
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