Observation 102205: Agaricales sensu lato
When: 2012-07-15
( 1440m)
No herbarium specimen

Notes: Under hardwoods. Bright cobalt blue cap. Pileipellis with globose elements.

Cystidia absent.

Spores smooth, hyaline, globose to subglobose.

Species Lists

Images

239996
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239994
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239995
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239997
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239998
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239999
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240000
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240001
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240002
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240003
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240004
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240005
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240017
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Gill cross section 400x
240018
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Gill cross section 400x
240019
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Gill cross section 160x
240028
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Pileus cross section showing blue pigmented pileocystidia 160x
240029
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Pileipellis 400x
240030
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Pileipellis 400x
240031
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Pileipellis 400x
240069
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Spores 1000x

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
coming back to this
By: Danny Newman (myxomop)
2016-04-15 12:45:03 CDT (-0500)

I do not think this or any of the other observations so named are, in fact, C. cyanea, for reasons starting with the apparent discrepancy in presence vs. absence of spore ornamentation (they look very not smooth in the micrograph), continuing on to the lack of any yellow in the lamellae, and most importantly, that none of the pigmentation is any degree of violaceous. These are blue! See the following paper on a collection from Puerto Rico to compare:

http://www.fpl.fs.fed.us/documnts/pdf1999/baron99a.pdf

These are not the same fungus.

pileipellis with globose elements
By: Danny Newman (myxomop)
2015-03-28 13:30:12 CDT (-0500)

but is it hymeniform?

The spores are smooth
By: Alan Rockefeller (Alan Rockefeller)
2012-07-19 23:08:45 CDT (-0500)
from: Calocybe cyanea – a rare and beautiful agaric is discovered in Puerto Rico
By: Danny Newman (myxomop)
2012-07-19 22:37:21 CDT (-0500)

Basidiospores white in deposit, (3-) 3.6 – 5 x (2-) 2.4 – 3.6 μm (n = 23, Lm = 4.09 ± 0.33, Wm = 2.93 ± 0.26, E’ = 1.24 – 1.78, Q = 1.41; HOLOTYPE n = 10, 3.2 – 4.1 × 2.4 – 3.0 μm, Lm= 3.5 ± 0.3, Wm =.7 ± 0.19, E = 1.16 – 1.45, Q = 1.32), small, ellipsoid in profile and face view, round in polar view, smooth, slightly thick-walled, wall siderophilic and cyanophilic, inamyloid, not metachromatic.


These don’t look smooth. You might even say they look rugose. Rugose spores…

A beauty!
By: Irene Andersson (irenea)
2012-07-19 15:17:22 CDT (-0500)

- with colours like Rugosomyces ionides, but the described micro characters don’t fit that particular species. Could belong to the genus Rugosomyces, though.

nice…
By: Richard and Danielle Kneal (bloodworm)
2012-07-19 14:49:38 CDT (-0500)

sweet find!

Created: 2012-07-19 13:48:12 CDT (-0500)
Last modified: 2016-04-15 15:26:43 CDT (-0500)
Viewed: 206 times, last viewed: 2016-06-21 08:48:37 CDT (-0500)
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