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Mot de passe perdu?

27-02-2026 17:51

Parasite de Evernia prunastri

Michel Hairaud

Michel Hairaud

Bonjour, Quelqu'un peut il me donner un conseil p

27-02-2026 16:17

Sydowiella or Melanconis teleomorph on Betula

Mathias Hass

Mathias Hass

Hi, Found this on Betula, rather fresh fallen twi

28-02-2026 11:54

Alain GARDIENNET

Alain GARDIENNET

Hi forum,Is anyone aware if the 1936 edition of Si

28-02-2026 14:43

Georgian litterature

Alain GARDIENNET

Alain GARDIENNET

A new refrence desired :Svanidze, T.V. (1984) Novy

01-03-2026 18:02

unidentified Helotiales on a leaf

Francois Guay

Francois Guay

I found this mystery Helotiales on an incubated le

01-03-2026 14:10

Peziza varia complex?

Antonio Couceiro

Antonio Couceiro

Hola, me gustaria conocer opiniones sobre este tem

01-03-2026 20:34

Hans-Otto Baral

Hans-Otto Baral

Does someone have access to Phytotaxa? I am intere

28-02-2026 11:05

Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

01-03-2026 18:46

Lichenicolous myxomycete on Lopadium

Robin Isaksson

Robin Isaksson

Hi! This species i se from time to time in the

01-03-2026 08:55

Capronia normandinae paper

Michel Hairaud

Michel Hairaud

Bonjour , Je souhaiterais recevoir cet article :�

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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

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