Observation 197630: Chaetothiersia vernalis Perry & Pfister
When: 2015-01-31

Notes: Single specimen, growing on redwood twig. Frb 8 mm wide, 5 mm tall.

One ascus: 250 × 13. Spores 15-16 × 9-10. Hairs up to 700 microns.

The key in www.ascofrance.fr/uploads/forum…/Revised-key-RPKedit-2-0002.doc leads to Trichopaea contradicta, but we probably want to eliminate this as well because of it’s much smaller (up to 2.5 mm) and has much smaller hairs (up to 140 microns).

Trichophaea hemisphaerioides looks the same, but has spores 7-8 microns wide, while all spores I’ve seen that looked mature enough (had 2 drops) were 10 microns wide.

Humaria is out because of non-smooth spores.

Proposed Names

28% (1)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Spores
By: Sava Krstic (sava)
2017-03-07 20:59:31 CET (+0100)

Please see a new and better collection of this fungus in Observation 271681. The more mature spores are eguttulate and their size is (almost) as in the description.

Hi Sava
By: Debbie Viess (amanitarita)
2017-03-07 18:20:24 CET (+0100)

there is a good write-up on Chaetothiersia vernalis in Beug’s NA Asco book.

Certainly the macro is quite similar, but those micro characters are not adding up.

The spores you show here are smaller than are those given for this sp., and rather than “eguttulate” have two oil drops, and the asci are smaller, too.
The paraphyses are a good match, tho!

And then, that whole range thing. In theory, C. thiersii is a Sierran sp. found at snowmelt!

Since this is actually a SC species, was it part of that DNA run by Christian? Now THIS would be an excellent one to go DNA deeper, and would certainly fit all of the criteria for the SC Mycoflora project, right down to that SC location.

If the DNA fits, then we need to rewrite the range data! We certainly need two out of three (macro micro and DNA) to make a good match.

Thanks
By: Sava Krstic (sava)
2015-02-04 06:56:00 CET (+0100)

Thank you, Elsa and thank you, Claude. I like “successful photo”.

Elsa, I just updated my profile with the gear info. For “tips for good macros”, I have to disappoint you. However, I’ll be happy to answer any concrete questions you might have, if I can.

Hi Sava
By: Claude Kaufholtz-Couture (Claude Kaufholtz-Couture)
2015-02-03 18:58:35 CET (+0100)

Successful photo !
cKc

Your photos are really amazing, Sava
By: Elsa (pinknailsgirl)
2015-02-03 14:31:22 CET (+0100)

and I would ask you, if not too much, if you could fill out your profile with your equipment and some tips to make a good macro. Would you do that?
Thank you.

Skills
By: Sava Krstic (sava)
2015-02-03 05:54:59 CET (+0100)

@Debbie: Things like this just show up if you’re motivated to spend half a day on your knees (which is what Christian and I did).

@Judi: I’m happy to hear the praise, but there’s little extraordinary here except the beauty of the subject amplified by its being hidden from the naked eye. I am a beginner in macro photography, but am getting better. :)

Incredible …
By: Judi T. (AvidAmateur)
2015-02-02 18:40:47 CET (+0100)

.. photography skills!

how did you even …
By: Debbie Viess (amanitarita)
2015-02-02 16:58:04 CET (+0100)

see this??!

Created: 2015-02-01 07:50:42 CET (+0100)
Last modified: 2017-03-07 18:11:59 CET (+0100)
Viewed: 211 times, last viewed: 2017-08-14 13:01:33 CEST (+0200)
Show Log