Observation 67926: Chaetothiersia vernalis Perry & Pfister

When: 2011-05-21

Collection location: Lake Almanor, California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

at 4,500’. discovered by ace fungi finder David Rust.

Species Lists



Proposed Names

47% (2)
Recognized by sight: unfamiliar pale white cup with brown hairy margin.
28% (1)
Recognized by sight
78% (2)
Eye3 Eyes3
Recognized by sight
Used references: “Keys to the Spring Macromycetes of the Sierra Nevada”, D. Desjardin.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
oh yeah, new one to us…
By: Debbie Viess (amanitarita)
2011-05-23 17:05:58 CEST (+0200)

it was best of show, right before the Calocybe onychinas.

all of these are in the fridge waiting for their microscopy moment…

great shots Deb
By: Britney Ramsey (Riverdweller)
2011-05-23 15:57:44 CEST (+0200)

I can never shoot the light colored cups, unless its dark and rainy or course.
Well done and neat find!

Fairly rare…
By: Douglas Smith (douglas)
2011-05-23 14:33:16 CEST (+0200)

Fairly rare fungus, named as a new species from the Spring Fungi course in the Yuba Pass region, by Brian Perry. More info here:


You should look for the warted spores… wait a sec… in the Key to Spring Fungi it appears in “KEY II – ASCOMYCETES”, under number 61. Which you get to from number 60a, which states “Ascospores warted, 10-13 µm broad”. But then you look at the above source, and it says spores 17 × 10 um, ellipsoid, smooth…

Ok, so it should be smooth spores I guess…

Created: 2011-05-23 05:42:23 CEST (+0200)
Last modified: 2011-05-30 17:06:30 CEST (+0200)
Viewed: 158 times, last viewed: 2017-06-09 19:47:39 CEST (+0200)
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