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06-09-2017 05:36

Ethan Crenson

In New York City, Inwood Hill Park. On a branch of

26-08-2017 22:14

PASCAL DUBOC

Bonsoirque pensez vous en attendant une micro qui

05-09-2017 12:27

Watt John

Whilst on recording foray with Northwest Fungus Gr

01-09-2017 22:15

BERNARD CLESSE BERNARD CLESSE

Bonsoir à tous,Je pense avoir trouvé Pulvinula

03-09-2017 11:36

Alex Akulov Alex Akulov

Dear friendsYesterday among the recently collected

03-09-2017 21:36

Cvenkel Miran

imageSlovenia,amsl 1600m, unless different colorin

03-09-2017 17:26

Lieve Deceuninck Lieve Deceuninck

Dear Forummembers I've a problem with an asco on

04-09-2017 07:23

Cvenkel Miran

Slovenia,amsl 1600 m, rare occurance, upper right

03-09-2017 10:09

Ueli Graf Ueli Graf

Hallo, habe etwas auf Hasenkot gefunden und ich ka

02-09-2017 17:18

Jason Karakehian Jason Karakehian

Dear AscoFrance forum,Any hints for this fungus wo

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Cryptovalsa or Diatrypella-polysporous pyreno on Platanus
Ethan Crenson, 06-09-2017 05:36
In New York City, Inwood Hill Park. On a branch of Platanus×acerifolia.  Dark erumpant pustules, wart-like, cracking through the bark.  Up to 1 mm in diameter by about .5 mm in height, some confluent.  Several papillate ostioles on each stromata.  In section, white material around the perithecia. Asci polysporous, the spore bearing part measuring 70-80 by 15-17µm, the entire ascus 102-188µm long. Appearing IKI- after KOH pretreatment.  Ascospores allantoid, yellow in mass with tiny oil droplet at each end, 7.5-12.5 by 2.5µm.  In Vasilyeva and Stephenson (2004), Pyrenomycetes of the Great Smokey Mountains II, (admittedly, not my region) it aligns well with Cryptovalsa prominens--and it is listed with Platanus as host.  Thank you in advance!
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