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15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Acanthostigma multiseptatum ?
Ethan Crenson, 15-01-2019 17:32
Hello,

In the Bronx, New York City last Saturday I found these setose superficial pyrenomycetes on a branch of hardwood.  I think they are Acanthostigma multiseptatum, mostly based on spore features.  I used the paper by Andy Miller and Itthayakorn Promputtha (2010) to reach this tentative ID. 

The hairs are brown measuring 86-112 x 5µm.  Asci bitunicate and IKI-, 111-116 x 17-24µm.  Spores multiseptate measuring 84-89 x 7.5-9.9µm.  I counted up to 14 septa, the spore slightly constricted at some of the septa.

The description in the Miller/Promputtha paper says the spores should not be constricted at the septa, but the length/width seem to fit and other features seem mostly within range. Am I correct that this is A. multiseptatum, or am I mistaken? 

Thanks in advance.

Ethan
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Andrew N. Miller, 15-01-2019 19:26
Andrew N. Miller
Re : Acanthostigma multiseptatum ?
Looks right to me!  

Great find!
Andy
Ethan Crenson, 16-01-2019 16:00
Re : Acanthostigma multiseptatum ?
Thanks Andy!  By the way, if you don't mind I'd like to contact you by email about a (sort of) related matter.
Andrew N. Miller, 16-01-2019 17:35
Andrew N. Miller
Re : Acanthostigma multiseptatum ?
Sure thing.  amiller7@illinois.edu

If you have sufficient material, we should try to sequence this collection... or maybe even culture it.

Cheers,
Andy