31-03-2026 21:18
Miguel Ángel Ribes
Good evening. oes anyone have the original descrip
31-03-2026 20:57
Stefan BlaserHello everybody, I hope somebody can help me with
26-03-2026 15:31
Åke Widgren
Hello,I found this one in October last year, on r
31-03-2026 16:20
Mlcoch Patrik
Hello, Please about help with determination. On
31-03-2026 08:19
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous m'aider à
30-03-2026 12:03
William Slosse
Hello all,On 27/03/26, in Kraaiveld in Wingene (Be
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
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
Jason Karakehian,
16-04-2019 12:54
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
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