Observation 227001: Hygrophorus Fr.

When: 2016-01-04

Collection location: Boorman Trail Middle Section, Longview, Texas, USA [Click for map]

Who: L G Price (LG_Price)

Specimen available

Notes:
Under mixed hardwoods, Oak, Sweet Gum also some pine and cedar nearby. Growing in 5-6 groups of 3-4 in an area about 5 feet X 6 feet.

Smell: none
Taste: none immediate, slight acrid later

Staining, none noted immediately or much later.

Chemical Tests:
KOH: no reaction
Ammonia:none
Iron Salts:none

Spore Print: white

Cap: Largest Caps were 7 inches across. Cap could be broken cleanly but was not brittle. White Flesh.

Stipe: rooted, silky streaked surface.

Gills: white, many short gills, close. Very slight pinkish tint.

Might be Clitocybe robusta, but does not have any smell, even hours after collecting and cutting.

Images

20160104-PANO2_2016P1020158.jpg
20160104-PANO2_2016P1020164.jpg
20160104-PANO2_2016P1020155.jpg
20160104-PANO2_2016P1020157.jpg
20160109-LX1_2016P1060126.jpg
1000 X – in Melzer’s
20160109-LX1_2016P1060127.jpg
1000 X – in Melzer’s
20160109-LX1_2016P1060133.jpg
1000 X – in Melzer’s
20160109-LX1_2016P1060141.jpg
1000 X – in Melzer’s
20160109-LX1_2016P1060147.jpg
1000 X – in Melzer’s
20160109-LX1_2016P1060148.jpg
1000 X – in Melzer’s

Proposed Names

-61% (2)
Recognized by sight
48% (4)
Recognized by sight
28% (1)
Recognized by sight: The slimy cap becomes dry as this type ages. Debris adhered to cap surfaces.
28% (1)
Recognized by sight: Similar to H. sordidus with a more southern distribution.
Used references: Waxcap Mushrooms of E NA.

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

= Observer’s choice
= Current consensus

Comments

Add Comment
Links, additional specimens, spore dimensions
By: L G Price (LG_Price)
2016-01-10 22:45:08 CST (-0600)

Thanks for the link to mushrooms of Quebec, a very helpful site.

I collected a few more today. There were many growing and I managed to collect several buttons. I found one mature with significant jelly underneath, along the stem.

The buttons had tiny beads of honey on the stipes but were not covered in jelly.

I will put up more photos later of the buttons. Also will measure spores but not tonight.

Thanks for the help. It is clearly hygrophorus. The spores should identify the species.

Champignons du Quebec…
By: Dave W (Dave W)
2016-01-10 00:00:09 CST (-0600)

http://www.mycoquebec.org/...

I don’t understand French, so I also use…
https://www.google.com/...

H. Sordidus Spore dimensions
By: L G Price (LG_Price)
2016-01-09 23:21:24 CST (-0600)

I will measure spores tomorrow. Also, I will try to collect another small one.

My comment about the dryness was directed at the small ones under leaves. They did not seem sticky – but I could have looked a little closer. I will go back tomorrow and try to collect another small one and look at it closer.

Thanks for the additional data. I don’t have those references and was just using MushroomExpert.

Why does the spore size rule out H. (sub)sordidus?
By: Dave W (Dave W)
2016-01-09 23:14:58 CST (-0600)

According to MushroomExpert, the spore dimensions for sordidus are 6-8 × 4.5-5. The Waxcap book says 6-9 × 3-5 for sordidus, and “slightly narrower spores” for subsordidus. The spores in the photos appear to fit into these reported dimensions.

Waxcap Mushrooms of NA gives maximum cap diameter for H. sordidus at 18 cm. Champignons du Quebec says the cap diameter for sordidus has been observed up to 20 cm. So it looks like Michael Kuo may have seen only modestly-sized examples of sordidus.

In zoom mode, it looks like the gills seen here are intervenose. This is a trait of H. sordidus, and is not a trait of Clitocybe robusta (which was mentioned as a possibility). C. robusta has a yellow spore print.

Champignons du Quebec mentions that the cap surface of H. sordidus becomes dry. In my experience, at least some of the slimy Hygrophorus types have caps that dry out. I wouldn’t place any importance upon the mushrooms not readily decaying (mentioned in comment).

Looks to me like H. sordidus/subsordidus fits this collection.

Spore Sizes Rule out H. subsordidus
By: L G Price (LG_Price)
2016-01-09 20:57:27 CST (-0600)

I uploaded some of the spore images. These rule out H. subsordidus according to the spore dimensions quoted in Mushroom Expert under H. sordidus.

The maximum cap size of H. Sordidus is 10 cm. This were up to 18 cm across the cap. Also, H. sordidus has a slimey cap and these did not.

Additionally, a few dried slowly on my desk with no deterioration. I don’t know of any Hygrophorus that would do that.

Hygrophorus ID – Questions
By: L G Price (LG_Price)
2016-01-09 16:11:25 CST (-0600)

I changed this back to Clitocybe based on the following

1 – the mushrooms grew in clusters in a circular area as Clitocybes are often found.
2 – Dryness – these were completely dry – even smaller specimens under leaves were dry, there was no sliminess about them
3 – Size – These were large mushrooms with mature caps around 7 inches across. I don’t know if any Hygrophorus that grow to this size
4 – Color – these were white with no staining upon cutting or tearing, even after several days of drying on my tabletop, there was little discoloration

If you know of a Hygrophorus species that could meet this description, please let me know.

I processed a lot of spore images but Clitocybe and Hygrophorus spore are much alike. The spore images did not help with the question.

Created: 2016-01-05 00:14:55 CST (-0600)
Last modified: 2016-02-08 21:16:42 CST (-0600)
Viewed: 114 times, last viewed: 2017-06-21 08:34:58 CDT (-0500)
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