Black bitunicate Ascomycete on old Pyrenomycete

21-09-2025 14:49

Unknown purple-black asco, long spores, brown epithecium

Ethan Crenson

Hi all, I am at a foray in central New York stat

22-09-2025 20:31

Phaeohelotium

Yanick BOULANGER

BonsoirVoici un ascomycète récolté au alentour

16-09-2025 12:53

Encoeliopsis rhododendri

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

22-09-2025 09:14

Sp en cáscara de nuez

ruiz Jose

Hola, me pasan este asco en cáscara de nuez. Esp

19-09-2025 23:55

Cherche document: Nograsek A, Matzer M. 1991 – Nicht-pyrenokarpe Ascomyceten auf Gefässpflanzen der Polsterseggenrasen

Jorge Hernanz

Estoy buscando y no encuentro el siguiente artícu

18-09-2025 08:35

Chaetomium

Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

19-09-2025 18:29

En KK de vacuno9

Castillo Joseba

De ayer recolectadas en Kk de vacunoHabia ejempl

17-09-2025 19:43

Lachnellula suecica ?

Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sph�

18-09-2025 19:40

Pulvinula sp

Sylvie Le Goff

BonjourPensez vous que le genre Pulvinula puisse c

18-09-2025 16:14

Literature request

Bernard Declercq

Hello,I am looking for a copy of following paper:H

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Black bitunicate Ascomycete on old Pyrenomycete

Ethan Crenson, 03-11-2017 03:43

This is from New York City, on hardwood probably Quercus, growing on top of an effuse black pyrenomycete, probably Diatrype. They appear deceptively cupulate, even discoid, but on closer inspection they appear to be collapsed stromata. The largest is perhaps .3mm in diameter. They grow amid a coarse black subiculum.

Asci are bitunicate, IKI-, 136-143 by 25-30µm.

Spores multi-septate (6-7, maybe, hard to tell), hyaline, with abundant oil droplets, and some with an appendage at one end, 39-62 by 7.5-12.5µm.

Paraphyses are irregular and septate, some bulges and occasionally branching near the tips.

Any ideas? Thanks!