When: 2008-05-10

Collection location: Pipi Valley, El Dorado Co., California, USA [Click for map]

Who: Douglas Smith (douglas)

Specimen available

This one is mostly white to off white, and has red stains on the base. From Desjardin “Spring Mushrooms of the Sierras” this suggest this is R. theirsii. But not really all the sure yet…

5/26/2008 – Getting back to this one. Looking at these later at home. The flesh was inamyloid with Meltzer’s. Under the scope there were many clamp connections observed.

Adding to this is a micro-shot here, it is of a spore from the branch tip at 1000x in Congo Red. The spore is clearly warted. Not spiny or smooth.

Using Desjardin’s Spring Fungi of the Sierras, this gets you to an id of R. thiersii.

Species Lists


Proposed Names

29% (1)
Recognized by sight
-29% (1)
Used references: Desjardin “Spring Fungi of the Sierra Nevada”
Based on microscopic features: Inamyloid flesh, red staining at base, clamp con. obs., warted spores.

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= Observer’s choice
= Current consensus


Add Comment
Yeah, well…
By: Douglas Smith (douglas)
2012-03-08 15:13:36 EST (-0500)

I do use Congo Red, but very rarely, because I hate it, and it doesn’t help me much under the scope to see any more. In some cases, it does help to make a better photo perhaps, but I just don’t have the time day to day to fuss with it.

But this one was rather early on in my microscopy career, and looking back on this, that spore is actually a contamination from a Galerina in the drier. This Ramaria here I think was too young to have any spores, so I was just going after what ever I could at the time.

Not a good obs., and should go back to just Ramaria sp., and then ignored probably…

Doug, so you do use Congo red,
By: Ron Pastorino (Ronpast)
2012-02-29 18:38:26 EST (-0500)

at least in your earlier mycological days.
The spore looks too small for R. thiersii, assuming ~ 1 micron/div.
According to the USDI Ramaria book this species has rather long spores,( 11.6-15.8 X 4.0-5.0 microns) and it doesn’t mention anything about red stains on the base.
However, I don’t have any alternative suggestions.