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25-04-2026 11:34

lachnum pudicellum
Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

24-04-2026 03:16

Trinacrium robustum?
David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 01:06

Neonectria ou thelonectria ?
Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

22-04-2026 20:17

Pseudaegerita spec.
Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

Fungus sp
François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Peziza
Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 19:12

Poilu, violet avec KOH
Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

21-04-2026 21:00

Hymenoscyphus sp
Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

21-04-2026 13:36

Wentiomyces-like on Salix
Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

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Hymenoscyphus fructigenus on Acer?
Juuso Äikäs, 08-09-2020 21:52
I have previously found H. fructigenus growing on an old acorn and read it grows on Corylus nuts as well. But can it also grow on samaras of Acer platanoides? The apos are pretty tough and redden on bruising. 

Spores:

(18.8) 19.6 - 23.3 (23.9) × (3.9) 4.1 - 4.5 (4.6) µm
Q = (4.3) 4.5 - 5.2 (5.3) ; N = 10
Me = 21.3 × 4.3 µm ; Qe = 4.9

  • message #64946
  • message #64946
Hans-Otto Baral, 08-09-2020 21:55
Hans-Otto Baral
Re : Hymenoscyphus fructigenus on Acer?
Yes of course it can. But nobody knows if it is genetically all the same. At least on Carpinus seeds occurs a different species.
Juuso Äikäs, 08-09-2020 21:59
Re : Hymenoscyphus fructigenus on Acer?
Ok then, good to know. It has a wider range of hosts than I previously thought.
Hans-Otto Baral, 09-09-2020 09:32
Hans-Otto Baral
Re : Hymenoscyphus fructigenus on Acer?
I noticed I have a folder for Acer with some drawings. There are now also your pics.

The variation within Quercus is high, I have there a collection that is surely not conspecific with others on Quercus because of the broad spores with low lipid content.