27-11-2025 15:41
Thomas LæssøeSpores brownish, typically 4-celled; 26.8 x 2.4;
27-11-2025 12:01
Thomas Læssøehttps://svampe.databasen.org/observations/10496727
27-11-2025 11:46
Thomas Læssøehttps://svampe.databasen.org/observations/10493918
27-11-2025 11:31
Thomas LæssøeCollectors notes: Immersed ascomata, erumpent thro
23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
25-11-2025 14:24
Thomas Læssøehttps://svampe.databasen.org/observations/10490522
26-11-2025 18:13
Jason Karakehian
The entire run of Mycotaxon is now available throu
25-11-2025 11:03
Mick PeerdemanHi all,One of my earliest microscopy attempts, so
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
Re : Acanthostigma multiseptatum ?
Looks right to me!
Great find!
Andy
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
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
If you have sufficient material, we should try to sequence this collection... or maybe even culture it.
Cheers,
Andy