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14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

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Lachnum (?) on shells of Fagus nuts
Ethan Crenson, 17-10-2018 07:10
In Northeastern North America.  On the banks of a stream.  These were on the inner shells of Fagus nuts.  Tiny white stipitate cups that resemble Lachnum.  The fruiting bodies are 1-2mm tall.  They are hairy on the outer surface with hairs also running down the stipe.  The hairs are hyaline, septate, rough textured with rounded ends.  Sometimes the end cell is enlarged.  Paraphyses lanceolate, longer than the asci.  Asci are IKI+ 40-50 by 4-5µm.  Paraphyses are 66-68 by 3-4µm.  Hairs 58-70 by 4µm.  Spores smooth, hyaline, ellipsoid, 5.5-6.5 by 3-4µm.  I am unable to find Lachnum sp. with spores this fat.  Any suggestions?  Thank you in advance.
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Hans-Otto Baral, 17-10-2018 08:19
Hans-Otto Baral
Re : Lachnum (?) on shells of Fagus nuts
This reminds me of my Lachnum gemmarum on bud scales of Fagus sylvatica in Europe, characterized by hair tips being never inflated, except that the spores are in your collection much wider and the asci larger.

Which Fagus species is it here and is it the inner side of the cupules or of the seed scales?

Zotto
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Ethan Crenson, 17-10-2018 16:15
Re : Lachnum (?) on shells of Fagus nuts
Hello Zotto, and thank you for your help!  The tree in question is Fagus grandifolia.  I believe the substrate is the seed scales--it is the smooth inner shell of the fruits.

Is there any literature on Lachnum in North America that I can refer to?

Ethan
Hans-Otto Baral, 17-10-2018 16:40
Hans-Otto Baral
Re : Lachnum (?) on shells of Fagus nuts
I have no idea about Lachnum in America. 

So you mean the thin brown shell of the triangular seeds .
Ethan Crenson, 17-10-2018 20:58
Re : Lachnum (?) on shells of Fagus nuts
Yes, exactly.