12-01-2026 22:02
Ethan CrensonHello all, I am hoping someone will have some ins
11-01-2026 20:35
Hello.A very tiny pyrenomycete sprouting sparsely
13-01-2026 18:55
Rees CronceStrossmayeria sp. on indet. decroticate hardwoodTh
13-01-2026 07:57
Danny Newman
cf. Bombardia on indet. decorticate woodAppalachia
13-01-2026 10:13
Danny Newman
Cordieritidaceae sp. on indet. wood w/ Hypoxylon s
13-01-2026 07:28
Danny Newman
Chlorociboria glauca on indet. decorticate logThe
13-01-2026 07:14
Danny Newman
Neodasyscypha cerina on indet decorticate logThe S
13-01-2026 09:10
Danny Newman
Dasyscyphella chrysotexta on indet. decorticate ha
13-01-2026 08:43
Danny Newman
Tricladium varicosporioides on indet. decorticate
13-01-2026 08:49
Danny Newman
Coccomyces sp. on fallen Rhododendron leavesPretty
Macrodiplodiopsis desmazieresii on Platanus occidentalis
Ethan Crenson,
04-03-2019 06:04
In Brooklyn, New York. I believe I have found Macrodiplodiopsis desmazieresii on a fallen branch of Platanus occidentalis in my neighborhood. There are tiny pustules beneath the bark which contain large, thick-walled, brown conidia that are 3-septate and enveloped in a mucoid (?) sheathe. Conidia are 44.5-52 x 17.3-19.8µm. The branch was lying at the base of a large Platanus occidentalis--the only one in the area. The neighborhood is otherwise heavily populated by Platanus x acerifolia, so I suppose it is possible that the branch was from one of those trees. Has M. desmazieresii been recorded on Platanus occidentalis? Is my identification correct?
Thank you!
Katarina Pastircakova,
04-03-2019 08:27
Re : Macrodiplodiopsis desmazieresii on Platanus occidentalis
Hi Ethan,
your identification is correct. Platanus occidentalis is also the host of M. desmazieri.
You can find some records here:
https://nt.ars-grin.gov/fungaldatabases/new_allView.cfm?whichone=all&thisName=Macrodiplodiopsis%20desmazieresii&organismtype=Fungus&fromAllCount=yes
Katarina
your identification is correct. Platanus occidentalis is also the host of M. desmazieri.
You can find some records here:
https://nt.ars-grin.gov/fungaldatabases/new_allView.cfm?whichone=all&thisName=Macrodiplodiopsis%20desmazieresii&organismtype=Fungus&fromAllCount=yes
Katarina
Ethan Crenson,
05-03-2019 04:11
Re : Macrodiplodiopsis desmazieresii on Platanus occidentalis
Thank you very much. I can't believe I did not know about the existence of that database!


