09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
08-06-2026 17:00
François BartholomeeusenGood day everyone, On June 5 2026, I collected de
08-06-2026 10:16
Spooren Marco
I don`t have a clou about this fungus,it is not in
07-06-2026 15:10
William Slosse
Hello everyone,On 05-06-26, I found following asco
05-06-2026 11:02
Thomas Læssøehttps://svampe.databasen.org/observations/10596691
07-06-2026 12:09
François Freléchoux
Bonjour, Voici une brève description de ce qui m
07-06-2026 12:43
Steve ClementsBojour. This was a strange find on a stick on my
12-07-2015 00:05
Nedim Jukic
This one from the same locality as the previous on
06-06-2026 17:44
Steve ClementsBonjour, This disco was on planed wood 3 x 1.5 cm
What is this pyrenomycete causing white lesions in hardwood bark?
Ethan Crenson,
05-05-2021 22:25
Hello all,
In a New York City cemetery last weekend I found a small hardwood branch with the bark beginning to fall away. In the bark are stout black pyrenomycetes in clusters, which seem to be causing white lesions in the bark and wood beneath. The pyrenomycetes can be quite large (by pyrenomycete standards). In the images of the 3 sectioned perithecia, the large one is 1mm wide by 1.5mm tall. It is 2mm tall when measuring from the base to the tip of the neck.
Asci: 153-168 x 7.5-10µm. The spore bearing part 105-125µm. IKI+, the apical plug about 2.5 tall x 3µm wide when mature; much longer in immature asci.
Spores: 13-14 x 6-7µm, brown, ellipsoid to inequalateral ellipsoid, guttulate, usually with one large guttule at the center, with a very inconspicuous germ slit less than spore length.
Can anyone help me put a name on this?
Thanks in advance.
Ethan
