Observation 439468: Hypholoma (Fr.) P. Kumm.

Original_Herbarium_Label: Hypholoma lateritium (Schaeffer) P. Kummer (Field label: Cort # 4)

Species Lists


This photo was intended only as a marker of the start of micros; the colour balance is set for the microscopy photos. Apologies.
Oluna's Notes - HYPHOLOMA cf. LATERICIUM.jpg
Oluna’s notes: note the “small umbo,” not many Hypholoma spp. have it.

Proposed Names

79% (2)
Recognized by sight: Looks somewhat like H. tuberosa but it isn’t. Definitely not H, lateritium

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= Observer’s choice
= Current consensus


Add Comment
I am glad that it is Hebeloma.
By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-22 13:50:52 CST (-0500)

Thank you and the Consensus experts for this name. I would not know it. What a waste of time!

In the case of the collection seen here…
By: Dave W (Dave W)
2020-11-22 08:39:51 CST (-0500)

the MO feature that reflects doubt is the consensus vote that has resulted in the generic label, “Hypholoma”.

Re: when reason for doubt exists,
By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-22 02:48:35 CST (-0500)

the herbarium collection label uses abbreviations such as “cf.”, “?”, “aff.” etc. Something like that is not allowed in MO, except for creating a Group. Group is fine, but use it when more similar entities exist. In the herbarium practice, “s.l.” or “sensu lato” is a usual way to translate “Group” on the herbarium labels.

Re: high confidence for ID to species
By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-22 02:16:10 CST (-0500)

In the majority of fungi, you need microscopic characters for reliable identification. Professional mycologists (except for a few whom I would not name) insist on examining the voucher specimen before they will tell you their opinion. Oluna’s drawings help, but specialists on various genera require having the specimens in hand even with them. DNA sequencing is a good tool in the hands of specialists who know what they are doing.
In this study of Swiss mushrooms that DNA sequencing is not a reliable way of mushroom identification:

Spore dimensions…
By: Dave W (Dave W)
2020-11-22 01:53:37 CST (-0500)

appear to match better with H. capnoides, another species reported to occur with widespread distribution across NA.

Portraying with high confidence an ID proposal when reason for doubt exists does not serve a purpose. When erroneous IDs “slip through the cracks” at MO, misinformation becomes available, and this misinformation is apt spread across the board.

By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-21 22:27:22 CST (-0500)

It all depends on the herbarium curator.
The first three photos were taken by a photographer who never took any mushroom photos before.
Oluna has an unfinished drawing that I will post later. The measurements will be in that drawing, together with “taste slightly bitter.”
Spores: with a pore; (6-)6.5-7 × 4-4.5 µm
Chrysocystidia: 30-50 × 7-8 µm
Cheilocystidia: 15-18 × 4-6(-7) µm

According to what criteria?
By: Dave W (Dave W)
2020-11-21 21:47:25 CST (-0500)

Are the micro-characters seen here sufficient to warrant high confidence for ID to species? I don’t even see spore dimensions listed. The macro-characters appear to be of little use with these withering fruit bodies.

Re: qualifies for storage/labelling in the herbarium?
By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-21 21:32:02 CST (-0500)


This 2nd hand “grab collection”…
By: Dave W (Dave W)
2020-11-21 21:10:41 CST (-0500)

qualifies for storage/labeling in an herbarium? Fruit bodies appear to be seguing into a state of decay.

This was a grab collection and we had to go by the micro characters
By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-21 15:58:38 CST (-0500)

This is a grab collection that was brought to us as a Cortinarius collection. The first three photos were taken by a photographer who had no experience photographing fungi. Adolf’s blue photo was taken with the camera set up for micros only to indicate the start of a new micro session. We were not able to use our photo for ID. Please note the chrysocystidia on our micrographs.
If you have a “better name” for this observation, send it to us as a Comment. In the herbarium practices crossing out the original name on the label is a mortal sin!

Re: Are you sure?
By: Oluna & Adolf Ceska (aceska@telus.net)
2020-11-21 12:57:32 CST (-0500)


Are you sure
By: Eva Skific (Evica)
2020-11-20 08:11:46 CST (-0500)