Observation 208538: Psathyrella (Fr.) Quél.
When: 2015-07-02
No herbarium specimen

Notes: Great clusters of this small mushroom were seen covering logs and sticks piled throughout the park. This park was repeatedly flooded all through the spring and early summer rains that drenched East Texas this spring. Now these little decayers are showing up in large numbers.

This is a coprinoid species with dark almost black spore but the gills do not deliquesce. It is a tiny fragile mushroom.

Cap – opens flat with max diameters 1 – 1.5 cm. Covered with fine granules. Buttons show cortina.

Gills – attached then breaking free when cap goes flat.

Stipe – thin fragile, same color as gills. shows some granules like cap. Length 2 – 2.5 times diameter of cap. Mycellium anchors stem to rotting wood.

Spore – dark, can be seen in the second photo.

Spore microscopy – Smooth, brown, central pore, Elliptical

Spore Sizes – [20/1/1] L (-6.5) 6.6 – 8.1 (-8.8) μm x W (-4.1) 4.3 – 5.2 (-5.6) μm, ( L = 7.2 μm, W = 4.6 μm), Q (-1.39) 1.50 – 1.58 (-), Q = 1.55 ellipsoid

Images

533985
20150702-PANO_2015P1130005.jpg
533986
20150702-PANO_2015P1130004.jpg
Button has cortina
533987
20150702-PANO_2015P1130007.jpg
mature cap has dark spore deposit from adjacent cap
533988
20150702-PANO_2015P1130001.jpg
broken cap shows that gills are initially attached then breaking free for cap to flatten.
533989
20150702-PANO_2015P1120994.jpg
clusters
533991
LX1_2015P1050346.jpg
With measurements
533994
20150702-LX1_2015P1050346.jpg
Without measurements
533995
20150702-LX1_2015P1050351.jpg
Without measurements

Proposed Names

-46% (2)
Used references: www.mushroomexpert.com keys
Based on microscopic features: spore color, shape, size
45% (2)
Eye3 Eyes3
Recognized by sight: looks like obs 206171

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Psathyrella ID
By: L G Price (LG_Price)
2015-07-03 05:12:36 BST (+0100)

I see now the problem with my Coprinellus disseminatus ID. that species has a pleated or striated cap and NO partial veil.

So, now which Psathyrella – mission impossible.

Created: 2015-07-03 04:33:22 BST (+0100)
Last modified: 2015-07-03 05:13:01 BST (+0100)
Viewed: 44 times, last viewed: 2016-03-10 04:39:54 GMT (+0000)
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