Observation 207125: Rhodocybe Maire
When: 2015-06-19
Herbarium specimen reported

Notes: Habitat:
Growing under large old cedar tree. Growing among cider needles, moss and lichens.

Cap – Creamy tan color. Convex. largest 1 inch diameter. Edge slightly rolled in. I saw no evidence of a cortina or veil, even in the smallest.

Gills – off white – close with many short gills of varying lengths. Attachment – free.

Stalk – 1.25 inch long. 3/16 inch thick on largest. Darker than cap and gill color.

Spore Print – I looked at the spore print again under a brighter light. I think the spore print is tan, it is light – not yellow as previously reported.

Smell – not good, like rotting mushroom even when not rotting.

UPDATE
all I ever got was a very light spore deposit. It’s hard to say what color other than not white and not dark.

I’ve uploaded 4 photos of the spore. They are irregular, nodulose, small (~ 5-6 microns across), lumpy irregular surface. Some look like they are trying to have straight sides. Seems to agree with what I have found so far about Rhodocybe.

Microscopy:

When I re-wet one cap to cut up, the water turned a golden color. Similarly when I looked at gill sections everything looked golden. The slide prepared in H2O with a trace of wetting agent, became cloudy very quickly.

I prepared slides twice and could see cysts on the gill edges about 50 micron long and 1 micron wide. I could see short rounded basidioles.

I thought I could see the Sterigma on some basidia but they did not extend. The surface was covered with spores and all were filled with granular material.

I looked for clamped connections but found none.

SPORE MEASUREMENTS:
[20/1/1] L (-5.0) 5.1 – 6.1 (-6.6) μm x W (-) 4.7 – 5.7 (-) μm, (L = 5.6 μm, W = 5.2 μm), Q (-1.01) 1.04 – 1.15 (-1.16), Q = 1.09 Subglobose

Difficult to measure as spores are so irregular. I avoided measuring any spore image that was an end-on view. I did not measure spores that were badly misshapen.

Images

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20150619-PANO_2015P1120383.jpg
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20150619-PANO_2015P1120382.jpg
529567
20150619-PANO_2015P1120379.jpg
529568
20150619-PANO_2015P1120377.jpg
529750
20150620-LX1_2015P1050223.jpg
1000X – 1 div = 1 micronFushian Double Stain used
529751
20150620-LX1_2015P1050224.jpg
1000X – 1 div = 1 micronFushian Double Stain used
529752
20150620-LX1_2015P1050231.jpg
1000X – 1 div = 1 micronFushian Double Stain used
529753
20150620-LX1_2015P1050233.jpg
1000X – 1 div = 1 micronFushian Double Stain used
530371
20150620-LX1_2015P1050225.jpg
1000 X
530380
20150620-LX1_2015P1050225.jpg
Shows Measured Spore
530381
20150620-LX1_2015P1050231.jpg
Shows Measured Spore

Proposed Names

-30% (2)
Recognized by sight
59% (2)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Thanks for the Rhodocybe ID
By: L G Price (LG_Price)
2015-06-20 19:21:38 PDT (-0700)

I am still trying to find information about this genus, but the spores look similar to what I’ve found so far.

Created: 2015-06-20 07:17:06 PDT (-0700)
Last modified: 2015-06-22 14:51:08 PDT (-0700)
Viewed: 80 times, last viewed: 2016-10-24 06:40:13 PDT (-0700)
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