Observation 78099: Conocybe deliquescens Hauskn. & Krisai

When: 2011-10-05

Collection location: Davis, California, USA [Click for map]

Who: Byrain

No specimen available

Notes:
Growing in grass near Conocybe apala, I think this looked a little different.

Images

It started to deliquesce and turned really slimy after a night in the fridge.
Spores from deliquesced goo
1000x
Mounted in KOH
1μ divisions
Spores from deliquesced goo
1000x
Mounted in KOH
1μ divisions
Spores from deliquesced goo
1000x
Mounted in H2O
1μ divisions
Spores from deliquesced goo
1000x
Mounted in H2O
1μ divisions
Spores from deliquesced goo
1000x
Mounted in H2O
1μ divisions
Spores from deliquesced goo
1000x
Mounted in H2O
1μ divisions
Spores from deliquesced goo
1000x
Mounted in H2O
1μ divisions
2-spored basidia
1000x
Mounted in H2O
1μ divisions
4-spored basidia, the 4th spore is blurred in the background
1000x
Mounted in H2O
1μ divisions
Immature basidium?
1000x
Mounted in H2O
1μ divisions

Proposed Names

31% (3)
Recognized by sight
31% (2)
Recognized by sight
12% (2)
Recognized by sight: very similar to this one:
http://mushroomobserver.org/7573?q=7kTF
28% (1)
Recognized by sight: New name for G. lateritia.

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

= Observer’s choice
= Current consensus

Comments

Add Comment
Gastropsis deceptiva
By: Darvin DeShazer (darv)
2011-10-07 05:47:56 BST (+0100)

In Mycologia 73: 181, Baroni reports Gastropsis deceptiva (=Gastrocybe deceptiva) as light gray brown cap and with spores 14-17.5 (20) x 8.5-11 (12.5), but with a 2.5 µm wide apical pore and two spored basidia. Also not a good fit for this observation.
http://www.cybertruffle.org.uk/...

Too big
By: Darvin DeShazer (darv)
2011-10-07 05:03:26 BST (+0100)

For Gastrocybe lateritia, Smith listed the spores as 10.5-12 (14) x (6) 7-8 µm, ellipsoid, smooth, with a prominent germ pore.
Smith, A. H., H. V. Smith and N. S. Weber. 1981. How to Know the Non-Gilled Mushrooms. Wm. C. Brown Co., Dubuque, Iowa. 324p.

Microscopy & spore measurements
By: Byrain
2011-10-07 03:45:59 BST (+0100)

The spores are smooth, 40 were measured with the average size being 14.53×8.54μ, the average Q was 1.7, and 2 & 4 spore basidia were observed. The measurements were (LxW):

12×7
12×7
12×7
12×7
12×8
13×7
13×7.5
13×8
13×8
13×9
14×7
14×8
14×8
14×8
14×9
14×9
14×9
14×9
14×10
14×10
15×8
15×8
15×8
15×8.5
15×9
15×9
15×9
15×9
15×9
15×10
16×7
16×8
16×9
16×9
17×9
17×9
17×10
17×10
17×10
17×11

Intermediate forms
By: Byrain
2011-10-06 19:12:44 BST (+0100)

There appear to be intermediate forms with Conocybe apala, I think this may be one as the cap clearly wasn’t as viscid as Gastrocybe lateritia is described. Otherwise it looks like a good match to me.

Source – http://botit.botany.wisc.edu/toms_fungi/sep2003.html

Viral infection
By: John Plischke (John Plischke)
2011-10-06 04:39:27 BST (+0100)
Secotioid conocybe?
By: Byrain
2011-10-06 01:44:18 BST (+0100)

Any tips on what to look for microscopically?

Created: 2011-10-06 01:21:35 BST (+0100)
Last modified: 2012-08-07 19:22:55 BST (+0100)
Viewed: 324 times, last viewed: 2019-02-17 17:15:58 GMT (+0000)
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