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03-03-2017 11:58

Alan Rockefeller Alan Rockefeller

What is this?    Under Quercus agrifolia in Oakl

04-03-2017 20:08

William Slosse William Slosse

Could this be H. leucomelaena?Found in sandy clay

09-03-2017 22:23

Viktorie Halasu Viktorie Halasu

Hello forum, I'd like to ask, which of the two ge

07-03-2017 22:33

Lepista Zacarias

Hi everyone,These specimens were found in a public

04-03-2017 17:25

Ethan Crenson

On bare wood in Bronx, New York, US.  There were

09-03-2017 15:51

Pablo Sandoval Pablo Sandoval

Estimados,Me podrían dar un consejo o cual es su

06-03-2017 16:27

Pablo Sandoval Pablo Sandoval

Estimados,Alguno de ustedes me podría facilitar l

09-03-2017 00:29

Malcolm  Greaves Malcolm Greaves

Can anyone confirm this as Pyrenopeziza plicata?Gr

08-03-2017 01:21

Lepista Zacarias

Hi again,This fungus was growing on the stem of an

07-03-2017 00:45

Miguel Ãngel Ribes Miguel Ángel Ribes

Good night friendsI have this Rosellinia at sea le

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Asco from California, USA
Alan Rockefeller, 03-03-2017 11:58
Alan RockefellerWhat is this?    Under Quercus agrifolia in Oakland.   Size approx 2 - 3 cm diameter.

Spores smooth, inamyloid, 18 × 10 micrometers. Asci inamyloid and with a rounded apex.  Micrographs in Meltzer's.

  • message #47618
  • message #47618
  • message #47618
Viktorie Halasu, 03-03-2017 23:21
Viktorie Halasu
Re : Asco from California, USA
Hello,
that's an interesting discomycete. That stipe reminds me of Tarzetta, but if the spores really are without guttules, then my best guess is a Geopyxis. If you can check the ascus base, Tarzetta has simple septate base, Geopyxis has forked (pleurorhynchous) base.
Viktorie
Nicolas VAN VOOREN, 10-03-2017 00:02
Nicolas VAN VOOREN
Re : Asco from California, USA
Tarzetta species possess large guttules in their spores.
Consider also the genus Jafnea (especially J. semitosta) because your micrographs show immature ascospores, but the spore shape agrees.