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06-02-2026 01:14

Amniculicola
Tomaz Vucko Tomaz Vucko

Hello!How would you name this species? Most perith

04-08-2014 17:35

Pachyella 1898
Leandro Sánchez Leandro Sánchez

Sur branche de feuillus, jusqu'à 22 mm diamètre,

05-02-2026 15:07

Asco in Pinus halepensis
Vasileios Kaounas Vasileios Kaounas

Found on a fallen needle of Pinus halepensis, diam

05-02-2026 06:43

At first glance, a Nitschkia, but...
Stefan Blaser

Hello everybody, Any help on this one would be mu

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Lichénicole sur Lobaria
Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Lichénicole sur Peltigera
Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Lichenicole hypocreale
Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Scutellinia hirta ? sur souche moussue
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

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Coccomyces strobi on Pinus strobus
Ethan Crenson, 16-04-2019 02:06
Hello,

Yesterday in New York City on Pinus strobus I saw what I assumed was a pyrenomycete.  Tiny erumpent pustule-like fruiting bodies on a fallen branch.  However, when I sectioned one of them I found that the interior is a solid yellow.  Asci are 92.5-107.5 x 7.5-10µm.  Paraphyses are filiform and curled at the ends.  Ascospores are 30-36 x 1.5-2µm.  I am assuming that this is Coccomyces strobi because of the substrate and the spore shape and dimensions, even though in this state it is probably immature (?).  Any input would be very welcome.

Ethan
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Jason Karakehian, 16-04-2019 12:54
Jason Karakehian
Re : Coccomyces strobi on Pinus strobus
Hi Ethan, that definitely looks rhytismatalean from the microphotographs. Perhaps C. strobi as you say its immature. We found these mature and sporulating in mid May last year up here in Concord, MA. Best wishes - J
Ethan Crenson, 16-04-2019 17:59
Re : Coccomyces strobi on Pinus strobus
Hello Jason!  Very good to hear from you.  Thanks for your help.  Perhaps I'll leave these in a suitable place and see if they mature.
Jason Karakehian, 16-04-2019 21:57
Jason Karakehian
Re : Coccomyces strobi on Pinus strobus
Hi Ethan, my pleasure. You can also go back and find more in a month. They're pretty common - at least we found many injured or dead saplings with these fungi fruiting on them last year. Kind regards - J