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22-07-2019 16:08

Viktorie Halasu Viktorie Halasu

Hello forum,I'm interested in the possibility of c

19-07-2019 11:15

Katarina Pastircakova

Hello, anybody has this article?Morelet M. 1992. O

21-02-2019 17:34

Edmond POINTE Edmond POINTE

Bonjour,J'hésite entre Podospora et schizothecium

22-07-2019 19:33

Ethan Crenson

I took these photos a while back and I was wonderi

22-07-2019 12:27

Castillo Joseba Castillo Joseba

suelo ver esta cosa  en los huecos que dejan las

21-07-2019 18:33

Filip Fuljer Filip Fuljer

Hello, i collected whitish discomycetes on decomp

21-07-2019 14:13

Stefan Jakobsson

Hello, Here a Hymenoscyphus growing on a last yea

18-07-2019 23:09

jean claude chasle

Bonsoir,Ceci est ma première demande sur le forum

19-07-2019 12:34

Filip Fuljer Filip Fuljer

Hi everyone,i found 2 days ago some species on old

20-05-2019 07:38

Ron Bronckers

Hi everybody,Can anybody provide me with a copy of

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Hymenoscyphus ... possibly epiphyllus?
Alan Smith, 17-10-2017 22:55
I found this one growing on a piece of unidentified herbaceous debris (possibly Rubus, possibly Urtica) which itself is only about 2.5mm in diameter - in woodland (Quercus, Betula) near Sheffield UK. What seems distinctive to me are the definite orange/yellow colour and the long, thin spores, typically 16 - 18 microns but up to 22 in length. Maybe Hymenoscyphus epiphyllus? ... but very happy to be corrected!

Merci d'avance, Alan
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Hans-Otto Baral, 18-10-2017 07:52
Hans-Otto Baral
Re : Hymenoscyphus ... possibly epiphyllus?
Hi Alan
This is clearly Hymenoscyphus menthae (= H. consobrinus). You may consult my paper on this:

Hymenoscyphus menthae, H. macroguttatus and H. scutula, a
comparative taxonomic study emphasizing the value of spore
guttulation and croziers. Ascomycete.org, 7 (6) : 255-287. (2015)

Typical are the navicular multiguttulate, homopolar spores without a perceptible upper end.

This is a plurivorous species, like H. epiphyllus which differs in a consistently short stout stipe, and spores with large and small drops, also in having croziers at the ascus base.

Urtica and Rubus are very easily separated in a cross section. Urtica 4-angled with cavities in the xylem.

Zotto
Alan Smith, 18-10-2017 16:19
Re : Hymenoscyphus ... possibly epiphyllus?
das ist sehr hilfreich, Zotto, danke