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10-04-2026 23:22

Pyreno on Phragmites australis
Gernot Friebes

Hi,ascospores are 1- to 3-septate, approximately 

10-04-2026 15:51

Botrytis ficariarum & Peronospora ficariae?
William Slosse William Slosse

Hello everyone, On 08/04/26, I found a growth sit

09-04-2026 15:25

Slerotinia verrucispora ???
Jac Gelderblom

On bare soil between mosses Ifound an asco I deter

09-04-2026 13:55

Small-spored "Diplodia" on broom (Cytisus scoparius) - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10589176

09-04-2026 10:12

Melanosporalian on attached decayed wood on fallen Carpinus, Denmark - very long-necked
Thomas Læssøe

https://svampe.databasen.org/observations/10587061

08-04-2026 20:33

Gyromitra sp. ?
Vasileios Kaounas Vasileios Kaounas

Found 07-04-26, in Abies cephalonica. Diameter 1,

08-04-2026 10:39

Littérature Korf
FRANCIS FOUCHIER

Bonjour , je recherche en pdf cet article: KORF R

06-04-2026 15:04

Gnomoniaceae
David Chapados David Chapados

Hi! Could someone help me identifying this specim

29-06-2016 15:18

Scopinella
Per Vetlesen

HiIt was found on the bark of a dead branch of Jun

07-01-2018 22:47

Scopinella?
Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

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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.